Automatically Creating Parts
Composer automatically creates parts under the following circumstances:
1.When you import a MIDI file, one part is created for each track, except for tracks with no notes. Said another way, one part is created for each staff in the score. Also, a conductor's part is created, which has all of the staves.
3.When you add a new staff, a corresponding new part is automatically created. If you use the Add Keyboard RH and LH Staves command in the Staff menu, then a single new part is created that has the pair of right- and left-hand staves.
5.The Split Hand command automatically creates a new keyboard part with the pair of right- and left-hand staves.
6.The Split Drums command automatically creates a new drum part has all of the split one-line percussion staves
7.The Prepare Piano Reduction command creates a single new keyboard part.