MC-307: Using The Mute Function
Use the following procedure to mute any Part of a Pattern while it is playing back:
1. Select a pattern and press PLAY.
2. Press PART MUTE.
3. Press a PART button (R - 7) to mute the selected Part. The PART button will blink while it is muted.
4. Press the selected PART button (R - 7) again to un-mute the selected Part.
5. Press STOP to end playback.