When you guys talk about the (excellent) Martinez score for SOLARIS, let’s not forget the even more excellent Artemiev score for the original Tarkovsky film. Also very much based on texture, although the variations of the Bach theme is obviously the most famous. I would consider both of these classics in their own way.
I’ve never listened to Artemiev’s score outside of the film, but you’ve made me want to give it a try :). Is it on Spotify? There’s an album there that seems to be “SOLARIS by Eduard Artemyev” (the title is in Russian/Ciryllic letters), but it sounds like a modern synth version (?). Also, it’s 76 minutes long, so it’s doubtful it’s an original OST album from back in the day..