I can't imagine listening to that style as a regular thing, but I could easily picture that as "alien music" for a movie or atmospheric background. Not 'musical' as I would think of it, but clearly recognizable as music for very different ears or mental structures.

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.

Reminds me of the "getting short of breath" music in Sonic, although that doesn't use any fancy tricks.