"Triangle and 8-Bit Delay" [4 MB .mp3]
"Pulse and Triangle and 8-Bit Freeze" [4 MB .mp3]
In these tracks MIDI piano roll notes trigger very basic modular synth patches and some very basic effects. Overtracking is used to stack tunes. These sound like chiptunes but they are just waveforms that are really...basic.
Update: Added a couple of bars to "Triangle and 8-Bit..." to make the middle section more coherent.