One sound source, just the 2hp Pluck, a fair amount of modulation from the Noise Engineering Clep Diaz and Clocked LFO from the Disting Mk4, the LFO is also controlling the sequence playing on the Pittsburgh Modular Micro Sequence, though the Pitches are taken from the Clep Diaz steps via the 2hp Turing machine and quantisized through the 2hp Tune. Audio split 3 ways to Intellijel Mixup, Dry / wet via Erica DSP and wet via 2hp Verb. I can listen to this for a really long time without getting bored!
Enjoy your spare HP, don't rush to fill every last space, this is not like filling sticker books. Resist the urge to 'complete' your rack, its never complete so just relax.