Introduction to MIDI and Computer Music: Assignment 2 Checklist
A real-time MIDI effect applies to the total duration of a track. If you want a track to have the effect only some of the time, then use two tracks assigned to the same patch, put the effect on only one of the tracks, and distribute your notes between the tracks. Another solution is to apply the effect destructively to the track, using the Region > MIDI Effects Plug-ins menu. If you do this, supply a track comment telling me what you did — click in the COMMENT column of the Tracks view to type.