Ever listen to a track and been floored by the thick, rich tones of the synths? My guess is yes and if so you've probably stopped and wondered, how do they make these incredible sounds? You may already know the answer or at least part of it, layering sounds is a hallmark of electronic music. To make interesting dynamic synth sounds producers layer synths. In Ableton, the easiest way to layer synths is with Instrument Racks.