The green squares are the channels. Hover over them to see what instrument/vocal is being played. The blue buttons are the tools/modes you can use. Click on one to select it (as noted by it being brighter). Click one of the channels to apply that mode to the specific channel. Click the 'All' channel to apply the mode to all channels, and click the 'Random' channel to apply the mode to a random channel. Mute: Mutes the channel Unmute: Unmutes the channel Solo: Mutes all channels except the selected channel. Pitch: Change the pitch of the channel. Off-sync: Slightly change the pitch of the channel to make it go off-sync. Kill: Gradually decrease the pitch of the channel. Hyper: Gradually increase the pitch of the channel. Warp: Rapidly increase and decrease the pitch of the channel.