The standard modern saxophone has 23 keys.

The upper section (left hand position) has access to five padded keys, three palm keys, four pinky keys and the octave key.

The right hand has access to three padded keys, two pinky keys and five palm keys which includes the altissimo high F# key.


https://www.wfg.woodwind.org/sax/sax_fing.html#a:


LEFT
T: Octave

Eb palm: Eb palm key
D palm: D palm key
F palm: F palm key

F front: Front f key
1 L: First finger key left

Bb bis: Bb bis key
2 L: Second finger key left

3 L: Third Finger key left
G# palm: G# palm key
C# palm: C# palm key

B low: Low B key
Bb low: Low Bb key

RIGHT

E side: E side key
C side: C side key
Bb side: Bb side key

1 R: First finger key right
F# high: High F# key

2 R: Second finger key right
F# alt: Alternate F# key

3 R: Third Finger key right

Eb low: Low Eb key
C low: Low C key
