In this mixing/mixdown tutorial in Ableton Live, Jake Perrine, Certified Ableton Trainer shows us how to use sidechain compression on a delay on a return track.  This technique is useful for making sure your returns and spacial effects don’t muddy up your mix.  It allows the send track to reduce the amplitude of the return when it’s playing, then allow it to spring back up when the send track is silent. This pro tip shows you how to improve your mix downs in Ableton Live.