Interesting! I'd like to see a version where the double-time track is fading in continuously, instead of arriving all at once at the beginning of a measure (whi

Interesting! I'd like to see a version where the double-time track is fading in continuously, instead of arriving all at once at the beginning of a measure (which would be a closer analogue of the Shepard Tone). Can't quite tell if the other reply is an example of that.