The various Scale objects provide a bi-directional object representation of octave repeating and non-octave repeating scales built by network of Interval objects as modeled in BoundIntervalNetwork.
The main public interface to these resources are subclasses of ConcreteScale, such as MajorScale, MinorScale, and MelodicMinorScale.
More unusual scales are also available, such as OctatonicScale, SieveScale, and RagMarwa.
All ConcreteScale subclasses provide the ability to get a pitches across any range, get a pitch for scale step, get a scale step for pitch, and, for any given pitch ascend or descend to the next pitch. In all cases Pitch objects are returned.
>>> from music21 import *
>>> sc1 = scale.MajorScale('a')
>>> sc1.getPitches('g2', 'g4')
[G#2, A2, B2, C#3, D3, E3, F#3, G#3, A3, B3, C#4, D4, E4, F#4]
>>> sc2 = scale.MelodicMinorScale('a')
>>> sc2.getPitches('g2', 'g4', direction='descending')
[G4, F4, E4, D4, C4, B3, A3, G3, F3, E3, D3, C3, B2, A2, G2]
>>> sc2.getPitches('g2', 'g4', direction='ascending')
[G#2, A2, B2, C3, D3, E3, F#3, G#3, A3, B3, C4, D4, E4, F#4]
>>> # a sieve-based scale using Xenakis's representation of the Major scale
>>> sc3 = scale.SieveScale('a', '(-3@2 & 4) | (-3@1 & 4@1) | (3@2 & 4@2) | (-3 & 4@3)')
>>> sc3.getPitches('g2', 'g4')
[G#2, A2, B2, C#3, D3, E3, F#3, G#3, A3, B3, C#4, D4, E4, F#4]
Inherits from: Scale, Music21Object, JSONSerializer
A concrete scale is specific scale formation with a defined pitch collection (a tonic Pitch) that may or may not be bound by specific range. For example, a specific Major Scale, such as G Major, from G2 to G4.
This class is can either be used directly or more commonly as a base class for all concrete scales.
Here we treat a diminished triad as a scale:
>>> from music21 import *
>>> myscale = scale.ConcreteScale(pitches = ["C4", "E-4", "G-4", "A4"])
>>> myscale.getTonic()
C4
>>> myscale.next("G-2")
A2
>>> myscale.getPitches("E-5","G-7")
[E-5, G-5, A5, C6, E-6, G-6, A6, C7, E-7, G-7]
A scale that lasts two octaves and uses quarter tones (D~)
>>> from music21 import *
>>> complexscale = scale.ConcreteScale(pitches = ["C#3", "E-3", "F3", "G3", "B3", "D~4", "F#4", "A4", "C#5"])
>>> complexscale.getTonic()
C#3
>>> complexscale.next("G3", direction=scale.DIRECTION_DESCENDING)
F3
>>> complexscale.getPitches("C3","C7")
[C#3, E-3, F3, G3, B3, D~4, F#4, A4, C#5, E-5, F5, G5, B5, D~6, F#6, A6]
>>> complexscale.getPitches("C7","C5")
[A6, F#6, D~6, B5, G5, F5, E-5, C#5]
ConcreteScale attributes
Attributes without Documentation: tonic, boundRange
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
ConcreteScale properties
- abstract¶
Return the AbstractScale instance governing this ConcreteScale.
>>> from music21 import * >>> sc1 = scale.MajorScale('d') >>> sc2 = scale.MajorScale('b-') >>> sc1 == sc2 False >>> sc1.abstract == sc2.abstract True
- chord¶
Return a Chord object from this harmony over a default range. Use the getChord() method if you need greater control over the parameters of the chord.
- isConcrete¶
Return True if the scale is Concrete, that is, it has a defined Tonic.
>>> from music21 import * >>> sc1 = scale.MajorScale('c') >>> sc1.isConcrete True >>> sc2 = scale.MajorScale() >>> sc2.isConcrete False
- musicxml¶
Return a complete musicxml representation.
- name¶
Return or construct the name of this scale.
>>> from music21 import * >>> sc = scale.DiatonicScale() # abstract, as no defined tonic >>> sc.name 'Abstract Diatonic'
- pitches¶
Get a default pitch list from this scale.
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
ConcreteScale methods
- derive(other, comparisonAttribute='pitchClass')¶
Return the closest-matching ConcreteScale based on the pitch collection provided as a Stream, a ConcreteScale, or a list of Pitch objects.
>>> from music21 import * >>> sc1 = scale.MajorScale() >>> sc1.derive(['c#', 'e', 'g#']) <music21.scale.MajorScale B major> >>> sc1.derive(['e-', 'b-', 'd'], comparisonAttribute='name') <music21.scale.MajorScale B- major>
- deriveByDegree(degree, pitch)¶
Given a scale degree and a pitch, return a new ConcreteScale that satisfies that condition.
>>> from music21 import * >>> sc1 = scale.MajorScale() >>> sc1.deriveByDegree(7, 'c') # what scale has c as its 7th degree <music21.scale.MajorScale D- major>
- deriveRanked(other, resultsReturned=4, comparisonAttribute='pitchClass')¶
Return a list of closest-matching ConcreteScale objects based on this AbstractScale, provided as a Stream, a ConcreteScale, or a list of Pitch objects. Returned integer values represent the number of mathces.
>>> from music21 import * >>> sc1 = scale.MajorScale() >>> sc1.deriveRanked(['c', 'e', 'b']) [(3, <music21.scale.MajorScale G major>), (3, <music21.scale.MajorScale C major>), (2, <music21.scale.MajorScale B major>), (2, <music21.scale.MajorScale A major>)] >>> sc1.deriveRanked(['c', 'e', 'e', 'e', 'b']) [(5, <music21.scale.MajorScale G major>), (5, <music21.scale.MajorScale C major>), (4, <music21.scale.MajorScale B major>), (4, <music21.scale.MajorScale A major>)]>>> sc1.deriveRanked(['c#', 'e', 'g#']) [(3, <music21.scale.MajorScale B major>), (3, <music21.scale.MajorScale A major>), (3, <music21.scale.MajorScale E major>), (3, <music21.scale.MajorScale C- major>)]
- findMissing(other, comparisonAttribute='pitchClass', minPitch=None, maxPitch=None, direction='ascending', alteredDegrees={})¶
Given another object of various forms (e.g., a Stream, a ConcreteScale, a list of Pitch objects), return a list of pitches that are found in this Scale but are not found in the provided object.
>>> from music21 import * >>> sc1 = scale.MajorScale('g4') >>> sc1.findMissing(['d']) [G4, A4, B4, C5, E5, F#5, G5]
- getChord(minPitch=None, maxPitch=None, direction='ascending', **keywords)¶
Return a realized chord containing all the pitches in this scale within a particular inclusive range defined by two pitches.
All keyword arguments are passed on to the Chord, permitting specification of quarterLength and similar parameters.
- getDegreeMaxUnique()¶
Convenience routine to get this from the AbstractScale.
- getPitches(minPitch=None, maxPitch=None, direction=None)¶
Return a list of Pitch objects, using a deepcopy of a cached version if available.
- getScalaStorage()¶
Return a configured scale scale object
- getScaleDegreeAndAccidentalFromPitch(pitchTarget, direction='ascending', comparisonAttribute='name')¶
Given a scale (or Key object) and a pitch, return a two-element tuple of the degree of the scale and an accidental (or None) needed to get this pitch.
>>> from music21 import * >>> cmaj = key.Key('C') >>> cmaj.getScaleDegreeAndAccidentalFromPitch(pitch.Pitch('E')) (3, None) >>> cmaj.getScaleDegreeAndAccidentalFromPitch(pitch.Pitch('E-')) (3, <accidental flat>)The Direction of a melodic minor scale is significant
>>> amin = scale.MelodicMinorScale('a') >>> amin.getScaleDegreeAndAccidentalFromPitch(pitch.Pitch('G'), direction=scale.DIRECTION_DESCENDING) (7, None) >>> amin.getScaleDegreeAndAccidentalFromPitch(pitch.Pitch('G'), direction=scale.DIRECTION_ASCENDING) (7, <accidental flat>) >>> amin.getScaleDegreeAndAccidentalFromPitch(pitch.Pitch('G-'), direction=scale.DIRECTION_ASCENDING) (7, <accidental double-flat>)Returns (None, None) if for some reason this scale does not have this step (a whole-tone scale, for instance)
- getScaleDegreeFromPitch(pitchTarget, direction='ascending', comparisonAttribute='name')¶
For a given pitch, return the appropriate scale degree. If no scale degree is available, None is returned.
Note – by default it will find based on note name not on PitchClass because this is used so commonly by tonal functions. So if it’s important that D# and E- are the same, set the comparisonAttribute to pitchClass
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.getScaleDegreeFromPitch('e-2') 1 >>> sc.getScaleDegreeFromPitch('d') 7 >>> sc.getScaleDegreeFromPitch('d#', comparisonAttribute='name') == None True >>> sc.getScaleDegreeFromPitch('d#', comparisonAttribute='pitchClass') 1 >>> sc.getScaleDegreeFromPitch('e') == None True >>> sc.getScaleDegreeFromPitch('e', comparisonAttribute='step') 1>>> sc = scale.HarmonicMinorScale('a') >>> sc.getScaleDegreeFromPitch('c') 3 >>> sc.getScaleDegreeFromPitch('g#') 7 >>> sc.getScaleDegreeFromPitch('g')
- getTonic()¶
Return the tonic.
>>> from music21 import * >>> sc = scale.ConcreteScale(tonic = 'e-4') >>> sc.getTonic() E-4
- intervalBetweenDegrees(degreeStart, degreeEnd, direction='ascending', equateTermini=True)¶
Given two degrees, provide the interval as an interval.Interval object.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.intervalBetweenDegrees(3, 7) <music21.interval.Interval P5>
- isNext(other, pitchOrigin, direction='ascending', stepSize=1, getNeighbor=True, comparisonAttribute='name')¶
Given another pitch, as well as an origin and a direction, determine if this other pitch is in the next in the scale.
>>> from music21 import * >>> sc1 = scale.MajorScale('g') >>> sc1.isNext('d4', 'c4', 'ascending') True
- match(other, comparisonAttribute='pitchClass')¶
Given another object of various forms (e.g., a Stream, a ConcreteScale, a list of Pitch objects), return a named dictionary of pitch lists with keys ‘matched’ and ‘notMatched’.
>>> from music21 import * >>> sc1 = scale.MajorScale('g') >>> sc2 = scale.MajorScale('d') >>> sc3 = scale.MajorScale('a') >>> sc4 = scale.MajorScale('e') >>> sc1.match(sc2) {'notMatched': [C#5], 'matched': [D4, E4, F#4, G4, A4, B4, D5]} >>> sc2.match(sc3) {'notMatched': [G#5], 'matched': [A4, B4, C#5, D5, E5, F#5, A5]} >>> sc1.match(sc4) {'notMatched': [G#4, C#5, D#5], 'matched': [E4, F#4, A4, B4, E5]}
- next(pitchOrigin=None, direction='ascending', stepSize=1, getNeighbor=True)¶
Get the next pitch above (or if direction is ‘descending’, below) a pitchOrigin or None. If the pitchOrigin is None, the tonic pitch is returned. This is useful when starting a chain of iterative calls.
The direction attribute may be either ascending or descending. Default is ascending. Optionally, positive or negative integers may be provided as directional stepSize scalars.
An optional stepSize argument can be used to set the number of scale steps that are stepped through. Thus, .next(stepSize=2) will give not the next pitch in the scale, but the next after this one.
The getNeighbor will return a pitch from the scale if pitchOrigin is not in the scale. This value can be True, ‘ascending’, or ‘descending’.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.next('e-5') F5 >>> sc.next('e-5', stepSize=2) G5 >>> sc.next('e-6', stepSize=3) A-6This uses the getNeighbor attribute to find the next note above f#5 in the E-flat major scale:
>>> sc.next('f#5') G5>>> from music21 import * >>> sc = scale.HarmonicMinorScale('g') >>> sc.next('g4', 'descending') F#4 >>> sc.next('F#4', 'descending') E-4 >>> sc.next('E-4', 'descending') D4 >>> sc.next('E-4', 'ascending', 1) F#4 >>> sc.next('E-4', 'ascending', 2) G4
- pitchFromDegree(degree, minPitch=None, maxPitch=None, direction='ascending', equateTermini=True)¶
Given a scale degree, return a deepcopy of the appropriate pitch.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.pitchFromDegree(2) F4 >>> sc.pitchFromDegree(7) D5
- pitchesFromScaleDegrees(degreeTargets, minPitch=None, maxPitch=None, direction='ascending')¶
Given one or more scale degrees, return a list of all matches over the entire range.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.pitchesFromScaleDegrees([3,7]) [G4, D5] >>> sc.pitchesFromScaleDegrees([3,7], 'c2', 'c6') [D2, G2, D3, G3, D4, G4, D5, G5] >>> sc = scale.HarmonicMinorScale('a') >>> sc.pitchesFromScaleDegrees([3,7], 'c2', 'c6') [C2, G#2, C3, G#3, C4, G#4, C5, G#5, C6]
- romanNumeral(degree)¶
Return a RomanNumeral object built on the specified scale degree.
>>> from music21 import * >>> sc1 = scale.MajorScale('a-4') >>> h1 = sc1.romanNumeral(1) >>> h1.root() A-4 >>> h5 = sc1.romanNumeral(5) >>> h5.root() E-5 >>> h5 <music21.roman.RomanNumeral V in A- major>
- show(fmt=None, app=None, direction='ascending')¶
Show the scale in a format. Here, prepare scala format if requested.
- solfeg(pitchTarget=None, direction='ascending', variant='music21', chromatic=True)¶
Returns the chromatic solfege (or diatonic if chromatic is False) for a given pitch in a given scale.
The variant method lets one specify either the default music21 or humdrum solfeg representation for altered notes.
>>> from music21 import * >>> eflatMaj = key.Key('E-') >>> eflatMaj.solfeg(pitch.Pitch('G')) 'mi' >>> eflatMaj.solfeg(pitch.Pitch('A')) 'fi' >>> eflatMaj.solfeg(pitch.Pitch('A'), chromatic=False) 'fa' >>> eflatMaj.solfeg(pitch.Pitch('G#'), variant='music21') #default 'mis' >>> eflatMaj.solfeg(pitch.Pitch('G#'), variant='humdrum') 'my'
- transpose(value, inPlace=False)¶
Transpose this Scale by the given interval
note: it does not makes sense to transpose an abstract scale; thus, only concrete scales can be transposed.
>>> from music21 import * >>> sc1 = scale.MajorScale('C') >>> sc2 = sc1.transpose('p5') >>> sc2 <music21.scale.MajorScale G major> >>> sc3 = sc2.transpose('p5') >>> sc3 <music21.scale.MajorScale D major>
- tune(streamObj, minPitch=None, maxPitch=None, direction=None)¶
Given a Stream object containing Pitches, match all pitch names and or pitch space values and replace the target pitch with copies of pitches stored in this scale.
This is always applied recursively to all sub-Streams.
- write(fmt=None, fp=None, direction='ascending')¶
Write the scale in a format. Here, prepare scala format if requested.
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: Scale, Music21Object, JSONSerializer
An abstract scale is specific scale formation, but does not have a defined pitch collection or pitch reference. For example, all Major scales can be represented by an AbstractScale; a ConcreteScale, however, is a specific Major Scale, such as G Major.
These classes provide an interface to, and create and manipulate, the stored BoundIntervalNetwork object. Thus, they are rarely created or manipulated directly by most users.
The AbstractScale additionally stores an _alteredDegrees dictionary. Subclasses can define altered nodes in AbstractScale that are passed to the BoundIntervalNetwork.
AbstractScale attributes
Attributes without Documentation: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractScale properties
- networkxGraph¶
Return a networks Graph object representing a realized version of this BoundIntervalNetwork.
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractScale methods
- buildNetworkFromPitches(pitchList)¶
Builds the network (list of motions) for an abstract scale from a list of pitch.Pitch objects. If the concluding note (usually the “octave”) is not given, then it’ll be created automatically.
Here we treat the augmented triad as a scale:
>>> from music21 import * >>> p1 = pitch.Pitch("C4") >>> p2 = pitch.Pitch("E4") >>> p3 = pitch.Pitch("G#4") >>> absc = scale.AbstractScale() >>> absc.buildNetworkFromPitches([p1, p2, p3]) >>> absc.octaveDuplicating True >>> absc._net <music21.intervalNetwork.BoundIntervalNetwork object at 0x...>Now see it return a new “scale” of the augmentedTriad on D5
>>> absc._net.realizePitch('D5') [D5, F#5, A#5, D6]
- getDegreeMaxUnique()¶
Return the maximum number of scale steps, or the number to use as a modulus.
- getIntervals(stepOfPitch=None, minPitch=None, maxPitch=None, direction='ascending', reverse=False)¶
Realize the abstract scale as a list of pitch objects, given a pitch object, the step of that pitch object, and a min and max pitch.
- getNewTonicPitch(pitchReference, nodeName, direction='ascending', minPitch=None, maxPitch=None)¶
Define a pitch target and a node.
- getPitchFromNodeDegree(pitchReference, nodeName, nodeDegreeTarget, direction='ascending', minPitch=None, maxPitch=None, equateTermini=True)¶
Get a pitch for desired scale degree.
- getRealization(pitchObj, stepOfPitch, minPitch=None, maxPitch=None, direction='ascending', reverse=False)¶
Realize the abstract scale as a list of pitch objects, given a pitch object, the step of that pitch object, and a min and max pitch.
- getRelativeNodeDegree(pitchReference, nodeName, pitchTarget, comparisonAttribute='pitchClass', direction='ascending')¶
Expose functionality from BoundIntervalNetwork, passing on the stored alteredDegrees dictionary.
- getScalaStorage(direction='ascending')¶
Get interval sequence
- nextPitch(pitchReference, nodeName, pitchOrigin, direction='ascending', stepSize=1, getNeighbor=True)¶
Expose functionality from BoundIntervalNetwork, passing on the stored alteredDegrees dictionary.
- plot(*args, **keywords)¶
Create and display a plot.
- realizePitchByDegree(pitchReference, nodeId, nodeDegreeTargets, direction='ascending', minPitch=None, maxPitch=None)¶
Given one or more scale degrees, return a list of all matches over the entire range.
- show(fmt=None, app=None, direction='ascending')¶
Show the scale in a format. Here, prepare scala format if requested.
- write(fmt=None, fp=None, direction='ascending')¶
Write the scale in a format. Here, prepare scala format if requested.
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A scale of any size built with an interval list of any form. The resulting scale may be non octave repeating.
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
AbstractDiatonicScale attributes
Attributes without Documentation: relativeMajorDegree, relativeMinorDegree, dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractDiatonicScale properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractDiatonicScale methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A true bi-directional scale that with the augmented second to a leading tone.
AbstractHarmonicMinorScale attributes
Attributes without Documentation: dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractHarmonicMinorScale properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractHarmonicMinorScale methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A directional scale.
AbstractMelodicMinorScale attributes
Attributes without Documentation: dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractMelodicMinorScale properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractMelodicMinorScale methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
Abstract scale representing the two octatonic scales.
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A scale of any size built with an interval list that assumes octave completion. An additional interval to complete the octave will be added to the provided intervals. This does not guarantee that the octave will be repeated in one octave, only the next octave above the last interval will be provided.
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A pseudo raga-scale.
AbstractRagAsawari attributes
Attributes without Documentation: dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractRagAsawari properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractRagAsawari methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A pseudo raga-scale.
AbstractRagMarwa attributes
Attributes without Documentation: dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractRagMarwa properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractRagMarwa methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: AbstractScale, Scale, Music21Object, JSONSerializer
A dynamic, probabilistic mixture of minor pentatonic and a hexatonic blues scale
AbstractWeightedHexatonicBlues attributes
Attributes without Documentation: dominantDegree
Attributes inherited from AbstractScale: octaveDuplicating, deterministic, tonicDegree
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
AbstractWeightedHexatonicBlues properties
Properties inherited from AbstractScale: networkxGraph
Properties inherited from Scale: isConcrete, name
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
AbstractWeightedHexatonicBlues methods
Methods inherited from AbstractScale: buildNetworkFromPitches(), getDegreeMaxUnique(), getIntervals(), getNewTonicPitch(), getPitchFromNodeDegree(), getRealization(), getRelativeNodeDegree(), getScalaStorage(), nextPitch(), plot(), realizePitchByDegree(), show(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete cyclical scale, based on a cycle of half steps. These intervals do not have to be octave completing, and thus may produce scales that do no
>>> from music21 import *
>>> sc = scale.ChromaticScale('g2')
>>> sc.pitches
[G2, A-2, A2, B-2, B2, C3, C#3, D3, E-3, E3, F3, F#3, G3]
>>> sc.getPitches('g2', 'g6')
[G2, A-2, A2, B-2, B2, C3, C#3, D3, E-3, E3, F3, F#3, G3, A-3, A3, B-3, B3, C4, C#4, D4, E-4, E4, F4, F#4, G4, A-4, A4, B-4, B4, C5, C#5, D5, E-5, E5, F5, F#5, G5, A-5, A5, B-5, B5, C6, C#6, D6, E-6, E6, F6, F#6, G6]
>>> sc.abstract.getDegreeMaxUnique()
12
>>> sc.pitchFromDegree(1)
G2
>>> sc.pitchFromDegree(2)
A-2
>>> sc.pitchFromDegree(3)
A2
>>> sc.pitchFromDegree(8)
D3
>>> sc.pitchFromDegree(12)
F#3
>>> sc.getScaleDegreeFromPitch('g2', comparisonAttribute='pitchClass')
1
>>> sc.getScaleDegreeFromPitch('F#6', comparisonAttribute='pitchClass')
12
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete cyclical scale, based on a cycle of intervals. These intervals do not have to be octave completing, and thus may produce scales that do no
>>> from music21 import *
>>> sc = scale.CyclicalScale('c4', 'p5') # can give one list
>>> sc.pitches
[C4, G4]
>>> sc.getPitches('g2', 'g6')
[B-2, F3, C4, G4, D5, A5, E6]
>>> sc.getScaleDegreeFromPitch('g4') # as single interval cycle, all are 1
1
>>> sc.getScaleDegreeFromPitch('b-2', direction='bi')
1
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete diatonic scale. Each DiatonicScale has one instance of a AbstractDiatonicScale.
DiatonicScale attributes
Attributes inherited from ConcreteScale: tonic, boundRange
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
DiatonicScale properties
- musicxml¶
Return a complete musicxml representation.
Properties inherited from ConcreteScale: abstract, chord, isConcrete, name, pitches
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
DiatonicScale methods
- getDominant()¶
Return the dominant.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.getDominant() B-4 >>> sc = scale.MajorScale('F#') >>> sc.getDominant() C#5
- getLeadingTone()¶
Return the leading tone.
>>> from music21 import * >>> sc = scale.MinorScale('c') >>> sc.pitchFromDegree(7) B-4 >>> sc.getLeadingTone() B4 >>> sc.getDominant() G4
- getParallelMajor()¶
Return a concrete relative major scale
>>> from music21 import * >>> sc1 = scale.MinorScale(pitch.Pitch('g')) >>> sc1.pitches [G4, A4, B-4, C5, D5, E-5, F5, G5] >>> sc2 = sc1.getParallelMajor() >>> sc2.pitches [G4, A4, B4, C5, D5, E5, F#5, G5]
- getParallelMinor()¶
Return a parallel minor scale based on this concrete major scale.
>>> from music21 import * >>> sc1 = scale.MajorScale(pitch.Pitch('a')) >>> sc1.pitches [A4, B4, C#5, D5, E5, F#5, G#5, A5] >>> sc2 = sc1.getParallelMinor() >>> sc2.pitches [A4, B4, C5, D5, E5, F5, G5, A5]
- getRelativeMajor()¶
Return a concrete relative major scale
>>> sc1 = MinorScale(pitch.Pitch('g')) >>> sc1.pitches [G4, A4, B-4, C5, D5, E-5, F5, G5] >>> sc2 = sc1.getRelativeMajor() >>> sc2.pitches [B-4, C5, D5, E-5, F5, G5, A5, B-5] >>> sc2 = DorianScale('d') >>> sc2.getRelativeMajor().pitches [C5, D5, E5, F5, G5, A5, B5, C6]
- getRelativeMinor()¶
Return a relative minor scale based on this concrete major scale.
>>> sc1 = MajorScale(pitch.Pitch('a')) >>> sc1.pitches [A4, B4, C#5, D5, E5, F#5, G#5, A5] >>> sc2 = sc1.getRelativeMinor() >>> sc2.pitches [F#5, G#5, A5, B5, C#6, D6, E6, F#6]
- getTonic()¶
Return the tonic.
>>> from music21 import * >>> sc = scale.MajorScale('e-') >>> sc.getDominant() B-4 >>> sc = scale.MajorScale('F#') >>> sc.getDominant() C#5Methods inherited from ConcreteScale: derive(), deriveByDegree(), deriveRanked(), findMissing(), getChord(), getDegreeMaxUnique(), getPitches(), getScalaStorage(), getScaleDegreeAndAccidentalFromPitch(), getScaleDegreeFromPitch(), intervalBetweenDegrees(), isNext(), match(), next(), pitchFromDegree(), pitchesFromScaleDegrees(), romanNumeral(), show(), solfeg(), transpose(), tune(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A natural minor scale, or the Aeolian mode.
>>> sc = DorianScale(pitch.Pitch('d'))
>>> sc.pitches
[D4, E4, F4, G4, A4, B4, C5, D5]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A harmonic minor scale
>>> sc = HarmonicMinorScale('e4')
>>> sc.pitches
[E4, F#4, G4, A4, B4, C5, D#5, E5]
>>> sc.getTonic()
E4
>>> sc.getDominant()
B4
>>> sc.pitchFromDegree(1) # scale degree 1 is treated as lowest
E4
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypoaeolian scale
>>> sc = HypoaeolianScale(pitch.Pitch('a'))
>>> sc.pitches
[E4, F4, G4, A4, B4, C5, D5, E5]
>>> sc = HypoaeolianScale(pitch.Pitch('c'))
>>> sc.pitches
[G3, A-3, B-3, C4, D4, E-4, F4, G4]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypodorian scale
>>> sc = HypodorianScale(pitch.Pitch('d'))
>>> sc.pitches
[A3, B3, C4, D4, E4, F4, G4, A4]
>>> sc = HypodorianScale(pitch.Pitch('c'))
>>> sc.pitches
[G3, A3, B-3, C4, D4, E-4, F4, G4]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypolocrian scale
>>> sc = HypolocrianScale(pitch.Pitch('b'))
>>> sc.pitches
[F4, G4, A4, B4, C5, D5, E5, F5]
>>> sc = HypolocrianScale(pitch.Pitch('c'))
>>> sc.pitches
[G-3, A-3, B-3, C4, D-4, E-4, F4, G-4]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypolydian scale
>>> sc = HypolydianScale(pitch.Pitch('f'))
>>> sc.pitches
[C4, D4, E4, F4, G4, A4, B4, C5]
>>> sc = HypolydianScale(pitch.Pitch('c'))
>>> sc.pitches
[G3, A3, B3, C4, D4, E4, F#4, G4]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypolydian scale
>>> sc = HypomixolydianScale(pitch.Pitch('g'))
>>> sc.pitches
[D4, E4, F4, G4, A4, B4, C5, D5]
>>> sc = HypomixolydianScale(pitch.Pitch('c'))
>>> sc.pitches
[G3, A3, B-3, C4, D4, E4, F4, G4]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A hypophrygian scale
>>> sc = HypophrygianScale(pitch.Pitch('e'))
>>> sc.abstract.octaveDuplicating
True
>>> sc.pitches
[B3, C4, D4, E4, F4, G4, A4, B4]
>>> sc.getTonic()
E4
>>> sc.getDominant()
A4
>>> sc.pitchFromDegree(1) # scale degree 1 is treated as lowest
B3
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A locrian scale
>>> sc = LocrianScale(pitch.Pitch('b'))
>>> sc.pitches
[B4, C5, D5, E5, F5, G5, A5, B5]
>>> sc = LocrianScale(pitch.Pitch('c'))
>>> sc.pitches
[C4, D-4, E-4, F4, G-4, A-4, B-4, C5]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A lydian scale
>>> sc = LydianScale(pitch.Pitch('f'))
>>> sc.pitches
[F4, G4, A4, B4, C5, D5, E5, F5]
>>> sc = LydianScale(pitch.Pitch('c'))
>>> sc.pitches
[C4, D4, E4, F#4, G4, A4, B4, C5]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A Major Scale
>>> sc = MajorScale(pitch.Pitch('d'))
>>> sc.pitchFromDegree(7).name
'C#'
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A melodic minor scale
>>> sc = MelodicMinorScale('e4')
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A natural minor scale, or the Aeolian mode.
>>> sc = MinorScale(pitch.Pitch('g'))
>>> sc.pitches
[G4, A4, B-4, C5, D5, E-5, F5, G5]
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A mixolydian scale
>>> sc = MixolydianScale(pitch.Pitch('g'))
>>> sc.pitches
[G4, A4, B4, C5, D5, E5, F5, G5]
>>> sc = MixolydianScale(pitch.Pitch('c'))
>>> sc.pitches
[C4, D4, E4, F4, G4, A4, B-4, C5]
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete Octatonic scale. Two modes
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete cyclical scale, based on a cycle of intervals. These intervals do not have to be octave completing, and thus may produce scales that do no
>>> from music21 import *
>>> sc = scale.OctaveRepeatingScale('c4', ['m3', 'M3']) #
>>> sc.pitches
[C4, E-4, G4, C5]
>>> sc.getPitches('g2', 'g6')
[G2, C3, E-3, G3, C4, E-4, G4, C5, E-5, G5, C6, E-6, G6]
>>> sc.getScaleDegreeFromPitch('c4')
1
>>> sc.getScaleDegreeFromPitch('e-')
2
Inherits from: DiatonicScale, ConcreteScale, Scale, Music21Object, JSONSerializer
A phrygian scale
>>> sc = PhrygianScale(pitch.Pitch('e'))
>>> sc.pitches
[E4, F4, G4, A4, B4, C5, D5, E5]
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete pseudo-raga scale.
>>> from music21 import *
>>> sc = scale.RagAsawari('c2')
>>> sc.pitches
[C2, D2, F2, G2, A-2, C3]
>>> sc.getPitches(direction='descending')
[C3, B-2, A-2, G2, F2, E-2, D2, C2]
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete pseudo-raga scale.
>>> from music21 import *
>>> sc = scale.RagMarwa('c2')
>>> # this gets a pitch beyond the terminus b/c of descending form max
>>> sc.pitches
[C2, D-2, E2, F#2, A2, B2, A2, C3, D-3]
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A scale created from a Scala scale .scl file. Any file in the Scala archive can be given by name. Additionally, a file path to a Scala .scl file, or a raw string representation, can be used.
>>> sc = ScalaScale('g4', 'mbira banda')
>>> sc.pitches
[G4, A4(-15c), B4(-11c), C#5(-7c), D~5(+6c), E5(+14c), F~5(+1c), A-5(+2c)]
if only a single string is given and it’s too long to be a tonic or it ends in .scl, assume it’s the name of a scala scale and set the tonic to C4
>>> sc = ScalaScale('pelog_9')
>>> sc.pitches
[C4, D`4(-17c), D~4(+17c), F~4(-17c), G`4(+17c), A-4, A~4(-17c), C5]
If no scale with that name can be found then it raises an exception:
>>> sc = ScalaScale('badFileName.scl')
Traceback (most recent call last):
ScaleException: Could not find a file named badFileName.scl in the scala database
ScalaScale attributes
Attributes without Documentation: description
Attributes inherited from ConcreteScale: tonic, boundRange
Attributes inherited from Scale: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
ScalaScale properties
Properties inherited from ConcreteScale: abstract, chord, isConcrete, musicxml, name, pitches
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
ScalaScale methods
Methods inherited from ConcreteScale: derive(), deriveByDegree(), deriveRanked(), findMissing(), getChord(), getDegreeMaxUnique(), getPitches(), getScalaStorage(), getScaleDegreeAndAccidentalFromPitch(), getScaleDegreeFromPitch(), getTonic(), intervalBetweenDegrees(), isNext(), match(), next(), pitchFromDegree(), pitchesFromScaleDegrees(), romanNumeral(), show(), solfeg(), transpose(), tune(), write()
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: Music21Object, JSONSerializer
Generic base class for all scales, both abstract and concrete.
Scale attributes
Attributes without Documentation: type
Attributes inherited from Music21Object: classSortOrder, isSpanner, isStream, isVariant, hideObjectOnPrint, groups, id
Scale properties
- isConcrete¶
To be concrete, a Scale must have a defined tonic. An abstract Scale is not Concrete, nor is a Concrete scale without a defined tonic.
- name¶
Return or construct the name of this scale.
Properties inherited from Music21Object: activeSite, beat, beatDuration, beatStr, beatStrength, classes, derivationHierarchy, duration, isGrace, measureNumber, offset, priority, seconds
Properties inherited from JSONSerializer: json
Scale methods
Methods inherited from Music21Object: searchActiveSiteByAttr(), getContextAttr(), setContextAttr(), addContext(), addLocation(), addLocationAndActiveSite(), freezeIds(), getAllContextsByClass(), getCommonSiteIds(), getCommonSites(), getContextByClass(), getOffsetBySite(), getSiteIds(), getSites(), getSpannerSites(), hasContext(), hasSite(), hasSpannerSite(), hasVariantSite(), isClassOrSubclass(), mergeAttributes(), next(), previous(), purgeLocations(), purgeOrphans(), purgeUndeclaredIds(), removeLocationBySite(), removeLocationBySiteId(), setOffsetBySite(), show(), splitAtDurations(), splitAtQuarterLength(), splitByQuarterLengths(), unfreezeIds(), unwrapWeakref(), wrapWeakref(), write()
Methods inherited from JSONSerializer: jsonAttributes(), jsonComponentFactory(), jsonPrint(), jsonRead(), jsonWrite()
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A scale created from a Xenakis sieve logical string, based on the Sieve object definition. The complete period of the sieve is realized as intervals and used to create a scale.
>>> from music21 import *
>>> sc = scale.SieveScale('c4', '3@0')
>>> sc.pitches
[C4, E-4]
>>> sc = scale.SieveScale('d4', '3@0')
>>> sc.pitches
[D4, F4]
>>> sc = scale.SieveScale('c2', '(-3@2 & 4) | (-3@1 & 4@1) | (3@2 & 4@2) | (-3 & 4@3)')
>>> sc.pitches
[C2, D2, E2, F2, G2, A2, B2, C3]
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete scale based on a dynamic mixture of a minor pentatonic and the hexatonic blues scale.
>>> from music21 import *
Inherits from: ConcreteScale, Scale, Music21Object, JSONSerializer
A concrete whole-tone scale.
>>> from music21 import *
>>> sc = scale.WholeToneScale('g2')
>>> sc.pitches
[G2, A2, B2, C#3, D#3, E#3, G3]
>>> sc.getPitches('g2', 'g6')
[G2, A2, B2, C#3, D#3, E#3, G3, A3, B3, C#4, D#4, E#4, G4, A4, B4, C#5, D#5, E#5, G5, A5, B5, C#6, D#6, E#6, G6]
>>> sc.abstract.getDegreeMaxUnique()
6
>>> sc.pitchFromDegree(1)
G2
>>> sc.pitchFromDegree(2)
A2
>>> sc.pitchFromDegree(6)
E#3
>>> sc.getScaleDegreeFromPitch('g2', comparisonAttribute='pitchClass')
1
>>> sc.getScaleDegreeFromPitch('F6', comparisonAttribute='pitchClass')
6