Music event type span-event is in music objects of type BeamEvent, BendSpanEvent, CrescendoEvent, DecrescendoEvent, EpisemaEvent, FingerGlideEvent, LigatureEvent, MeasureCounterEvent, MeasureSpannerEvent, OptionalMaterialEvent, PhrasingSlurEvent, SlurEvent, SostenutoEvent, SpanEvent, StaffHighlightEvent, StaffSpanEvent, SustainEvent, TempoGradualChangeEvent, TextSpanEvent, TremoloSpanEvent, TrillSpanEvent, TupletSpanEvent, UnaCordaEvent, and VoltaSpanEvent.

Not accepted by any engraver or performer.