Custom MIDI script and template for MainStage 3 by Stephen Sherwood. This works great for song transitions, or as an ambient pad that fills out a song. You may have noticed that latch controls are not included in Mainstage. If you want to hold out a pad while you’re playing something else like a piano or a synth, you either need expensive gear or a third arm. This ambient pad solution solves that problem by adding latch controls to Mainstage! Full description below.