For a typical radio friendly recording, how often are the faders being changed? Specifically, is it common to lower all the instruments during the choruses? My mixes typically set all the instruments and leave them, but I wonder about a well-engineered rock album. Do songs make use of all those faders and controls and envelopes in programs like programs like Cakewalk? The screenshots of those programs always show crazy use of envelopes, but I just want to see if that's typical or atypical? What are the common fader movements in rock/pop music?