Today I was inspired by the Brian Eno section of https://teropa.info/loop/#/airports (right arrow or space-bar moves ahead in the presentation). So I tasked myself with attempting to simulate these simultaneous tape-loops. And naturally made the cleverly named program , tape-loop for this. Here is one run and then turned into an MP3 file:
Ok. Here is another run:
And here is a long one, with a warm synth pad:
For the chromatic piano fans, here is one at 300 BPM with all the notes between C5 and C6: