Composer->FAQ  [ Editing | Play & Sound | Import & Export | Printing | Troubleshooting | Misc | Search]

How can I play back only one staff of my song?

If you only want one staff to play back, make the staff active and press Shift+F5 to play the active staff. If you want some staves to play and some not to play, use Tools: Mute List for quick access to setting the staves to mute or not mute.