... take a stereo audio signal control levels and seperate the track using MIDI...
This makes no sense. I assume he recorded several midi tracks at the same time.Afterwards he exploded the Midi track and it opened into several Midi tracks
Afterwards he exploded the Midi track and it opened into several Midi tracks containing all the patterns played on its own wave pattern.
This also doesn't quite parse. Tweaking levels via MIDI could mean tweaking the MIDI voluime of MIDI notes, or tweaking the audio levels by using a MIDI controller.He then begin to mute parts out and tweak levels using Midi.