Did this using Reaper, Audacity, the wonderful Synth 1 vst and Arturia's analog player. Ambient rubbish alas, but where would the musically talentless be without the ability to endlessly alternate 2 chords? In same place that talentless keyboard players would be without arpeggiators and sequencers. I'll be there.
https://www.youtube.com/watch?v=eaoQFmRxq1s
Mark