(span-dynamic-event . (decrescendo-event crescendo-event))
(pedal-event . (sostenuto-event sustain-event una-corda-event))
(rhythmic-event . (lyric-event melodic-event multi-measure-rest-event
+ percent-event
rest-event skip-event bass-figure-event))
(melodic-event . (cluster-note-event note-event))
(() . (Announcement))