Caustic Song file (optional):
Slow CR-78 breakbeat-esque drums through chorus and vibrato, with a simple descending bassline and some chords using subsynth. Simple triangle and saw pads, and sine bass. Lots of reverb and delay. Some modular random LFO stuff for background atmosphere, and bitcrusher on master for outro.
No idea what chords I use, no music theory here really.
I'm quite disorganized while making music, as you'll see on the song file. I think it sounds pretty good though, although some stuff definitely is rough around the edges.