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1.1.7 AutoChangeMusic
Used for making voices that switch between piano staves automatically.
Properties:
name(symbol):
'AutoChangeMusicName of this music object.
iterator-ctor(procedure):
ly:auto-change-iterator::constructorFunction to construct a
music-event-iteratorobject for this music.start-callback(procedure):
ly:music-wrapper::start-callbackFunction to compute the negative length of starting grace notes. This property can only be defined as initializer in ‘scm/define-music-types.scm’.
length-callback(procedure):
ly:music-wrapper::length-callbackHow to compute the duration of this music. This property can only be defined as initializer in ‘scm/define-music-types.scm’.
types(list):
'(general-music music-wrapper-music auto-change-instruction)The types of this music object; determines by what engraver this music expression is processed.
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