The i/o album really blew up the usability of Apple Music. Three mixes per song, one of which (in-side) is an Atmos mix, unless you don’t have Spatial Audio active, when you silently get one of the other two. And they released it one song at a time throughout the year, so it was just a bag of unrelated singles. At the end of the year, the album came out with duplicate tracks for the two stereo mixes, and I don’t even know for sure how to get the in-side mix.

In general, the situation with Spatial Audio mixes is confusing, and it is really annoying for back catalog tracks where instead of the established (sometimes iconic) stereo version you silently get an Atmos version that the label commissioned without input from the original artist/producer/engineer.