"House Sweeps" [mp3 removed]
Full disclosure: this is one of those "art" pieces. An LFO-triggered filter sweep such as you might hear in a club tune, at the end of a dropout, right before kick comes triumphantly back in and takes the room to higher levels, here...fades out again. And then comes back... And then fades out, etc. There is also a drum pattern being swept with an LFO on a slightly faster frequency. And panning as seen in the diagram (the green lines). The upshot is, it's repetitive, but nothing ever repeats the same way exactly.