OptionaltremoloOptionaltremoloWhether this note starts a tremolo between (two) notes (type="start" in XML).
OptionaltremoloWhether this note stops/ends a tremolo between (two) notes (type="stop" in XML).
Number of tremolo strokes (e.g. 16th tremolo = 2 strokes). For a tremolo between notes, the number of strokes ("tremolo beams") drawn between the two notes.
Buzz roll (type="unmeasured" in XML)
The tremolo between (two) notes this note is part of, linking start and stop note. This object is shared between the start note and the stop note, set in VoiceGenerator.handleTremoloBetweenNotes().