source: https://www.w3.org/2021/06/musicxml40/musicxml-reference/elements/bend-alter/
MusicXML 4.0 >
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bend-alter
Parent element:
<bend>
The element indicates the number of semitones in the bend, similar to the element. As with the element, numbers like 0.5 can be used to indicate microtones. Negative values indicate pre-bends or releases. The and elements are used to distinguish what is intended. Because the element represents the number of steps in the bend, a release after a bend has a negative value, not a zero value.
semitones
None.
This element is used in the following examples:
, , ,