i've only ever used a compressor, or rather, noticed its impact when i sidechain it. what does it actually do if i use it on just the track by itself? i feel as though just increasing the gain of my track would cause the same effect. i'm probably stupid for saying that, but i'm just stuck on it.
also, how common is it to make pockets with your EQ for one track, based on another? if i have 4 tracks, do i make 3 packets on each track using 3 EQs that are in tune with the clarity of each of the other tracks?