
Or, do others not experience this? Is there something else happening that’s causing the notes to cut off? My question is whether there is a quick work around for this, or do people generally custom-route their instruments to channels in a way that avoids conflicting notes (i.e., pair bass instruments with treble – but then might you encounter key-switch conflicts when you export to a DAW for mockup? – so perhaps pair instruments that share similar rhythms and would therefore have similar note-off times if they do happen to cross)? (To date, I’ve been using the channels that Sibelius automatically assigns to each instrument – maybe that’s my mistake). (For example, a harp arpeggio might cut off a sustained choral note on the same channel). My guess has been that given the number of midi channels available, multiple instruments are placed on each channel, and instruments on the same channel occasionally play the same note – and the note-off signal from one instrument is cutting off both/all of those unison notes.

This is especially a problem with larger scores (30+ instruments). When playing back scores in Sibelius 7.5, I frequently have notes cut off suddenly throughout a score.

Seattle composer Bill Panks posted this question about missing notes during Sibelius score playback on the Seattle Composer’s Alliance Discussion email list, which I thought I would share here:
