Later-era Ryuichi Sakamoto solo piano song that consists of a short repetitive, slowly evolving piano melody that branches into a two part round
About 5 years ago, I had this song saved on youtube and that upload vanished a while ago. I can't remember the name, but I thought it was from Playing the Piano. Going through it now, I can't find the same song, unless there's some edition with extra tracks.
The song starts off with just one piano playing a short slow phrase that keeps morphing, but eventually (I think through some kind of double-tracking), another very similar sets of phrases starts coming from another piano, and I remember it being sort of abstract, like not really exactly in tempo with the initial phrases. They would kind of slowly weave in and out of sync. It was really cool.
Maybe a really poor way to describe it, but musically the phrase kind of reminded me of Shiek's Theme from Zelda Ocarina of Time