I love these games and I think the soundtracks are underrated as an essential part of their appeal. I’ll Start with one:
https://www.youtube.com/watch?v=Kk72RMv9d0s
Tube of Medusa from Ecco2: Tides of Time.
Personally, I think the Sega CD version soundtrack is… fine, but it has a different composer. If I remember correctly, it;s the composer from the first Ecco. In my opinion, it’s inoffensive, but completely forgettable.
EDIT: I have edited the topic to include older stuff.
NES Batman, the first level. That is pops into my head all the time. Also, the main theme and cabin interior music from Friday the 13th. Final mention, Legend of Kage had some rad tracks.