SongWriter can play your score back over any MIDI channel configuration you can devise. See ScoreManagers to find out how to assign each staff to a MIDI channel.
| Command | Keyboard Shortcut | 
| Begin/Pause playing (Playback Controls open) | Spacebar | 
| Begin playing (Playback Controls closed) from the current measure | Spacebar–click in staff | 
| Begin playing from current measure in the current staff only | Shift-spacebar–click in staff | 
| Begin playing from current measure in the global staff list | Spacebar–click in between staves | 
| Begin playing from measure one in the global staff list | Spacebar–click to the left of a staff system | 
| Begin playing from measure one in the current staff only | Shift-spacebar-click to the left of a staff | 
| “Scrub” onscreen music - all staves | Option-spacebar (and drag across music) | 
| “Scrub” onscreen music - current staff only | Option-Shift-spacebar (and drag across music) | 
Click again to reverse the status of a staff (click a Play square to make it solid again, or click a Solo circle to turn it off).
To send an All Notes Off message
On rare occasions, you may encounter a situation called MIDI lock, in which your synthesizer is “stuck” on a certain note or chord.
To specify playback parameters
No particular tool has to be selected.
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