This is a comma pump in porcupine which goes up by three 6/5's and then down two 4/3's back to 1/1. I designed it as an example of something that I thought sounded perfectly "natural," but which doesn't work at all in 12-EDO. I'll use this in a piece somewhere down the road.

The tuning here is 23-EDO, which does a much poorer job in approximating the harmonic series when compared to the other tunings listed here, so the chords don't seem to blend as well. That notwithstanding, it still has a certain interesting color to it, which I somewhat enjoy.

A Porcupine Comma Pump - 23-EDO version

This is mostly goofy experimental music theory stuff to see how different microtonal scales sound - no real musical compositions here (yet)

A Porcupine Comma Pump - 23-EDO version

Mike Battaglia