The tie module contains a single class, Tie that represents the visual and conceptual idea of tied notes. They can be start or stop ties.
Object added to notes that are tied to other notes. The type value is one of start, stop, or continue.
>>> note1 = note.Note()
>>> note1.tie = tie.Tie("start") # start, stop, or continue
>>> note1.tie.style = "normal" # default; could also be "dotted" or "dashed" or "hidden"
>>> note1.tie.type
'start'
>>> note1.tie
<music21.tie.Tie start>
Tie bases