Selecting the “M” Button mutes the audio output for that Part. However, the Part is still playing in the background when muted, and will continue to use CPU resources.
Selecting the “S” Button will Solo a Part. When the Solo button is selected, only that Part will be heard and all other Parts will be muted. It is possible to Solo multiple Parts by selecting additional Solo buttons.
NOTE: The Solo and Mute Buttons can be MIDI Learned. Using this feature can make it very easy to Mute or Solo multiple Parts simultaneously. Check out the MIDI Learn chapter for more information.