This piece uses a trick I learned last week via a YouTube video that showed a guy playing an MS-20 "drenched in reverb" (https://www.youtube.com/watch?v=Ynu8vPu2amg). By playing fast arpeggios on the mono synth, and using a long decay at 100% wet in the effect unit, he was able to get ambient, sustained chords.

Here's my attempt at the same using a modular going into the 2C Aether reverb plugin.

I set up four rows of "chords" on the René, and used the Pressure Points to select between these rows via the René y-cv input.
That way I was able to "play" each chord. If anyone's interested leave comment and I'll put up a patch diagram.

Arpeggiated Ambient I

jdn / Station Point