[ this is just an aural oddity… ]
https://shapesounds.com/
sometimes I have trouble identifying the rhythm if it’s not common or waltz time…
Reminds me a bit of some of Philip Glass’s compositions…
https://shapesounds.com/
Cool. This reminded me of the Shepard Tone, which is a seemingly ever-rising pitch, but actually, it’s not changing at all. I suspect both illusions are based on the same idea.
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Interesting. Reading the description of this phenomenon before hearing it may have diminished its effect on me, though 
To me it felt like certain parts played smaller subdivisions from time to time, then settled back to the original time.
As far as sonic gimmicks are concerned, it made me think of this:
It comes from an album whose label states, “This record is playable at any phonograph speed with full stereo effect.” (See it on Discogs here)
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