Another one I've been searching for for quite a while.
If I had to sum it up in one word - make that two: "Sports Men."
This was my introduction to Hosono's solo career (via the excellent root strata mix). As I listen to it on repeat while writing this, the song's got to top anything YMO ever put out. This is a non-argument, like when Freud says it's a manifestation of your unconscious.
Released in '82 on his and Yuki's Yen label, this is a freewheeling, joyfully disorganized record, with aforementioned pop tunes rubbing shoulders with a cover of a well-known 19th century Italian song, takes on traditional Japanese percussion ("Luminescent/Hotaru"), and one-man choral pieces ("Philharmony"). Some of the sonic risks he takes on numbers like "Birthday Party" remind me of Ryuichi's dance soundtrack "Esperanto" - or some of the MIDI play employed by contemporary sound artists like Oneohtrix Point Never or Demdike Stare. A joy to listen to.