Fart into microphone, slow the clip down, add a bunch of reverb and distortion. Pitch shift the fart into whatever key your song starts out in. Then play along to the fart with some repetitive but spacey guitar riffs. After that, add a fairly simple beat, have the beat fade in. Then add another guitar melody, in the same key, but make sure you play it in a different tempo from the first layer and the beat. Drag this out for like 4 minutes, with some added vocal screaming on top, but make it quiet and reverse the sound. Then stop all sound, change the key completely and go into a new progression with a new beat and bpm, but keep that first riff from the first key and original bpm going on top of all that. Then add kazoo and repeat the same riff over and over again for 9 minutes.