/vr/ - Retro Games

>>10192254
depends. for game/wad soundtracks, there were a couple of anon-made compilations:
https://files.catbox.moe/2hul76.zip
https://mega.nz/file/dWQ3SThI#qYcpa4eGQj6ElyRZgjGqszR59dh4Fq9D3qXYee54kZQ
(second one is a re-upload, original mediafire link got stale)
for 90s radio-popular songs and misc classics, you can try the 2009 geocities midi archive: https://archive.org/details/archiveteam-geocities-midi-collection-2009
for relatively modern rock, you can grab guitarpro tabs from ultimate-guitar.com and convert them to midi (with varying degrees of success)
there used to be a bunch of midi cover sites just a year or two ago, but all seem down now (midimelody.ru, midistock.ru). they had a big overlap in content (a lot of 00s alt rock), there might be a torrent with an archive somewhere.
midi.ru was another, but that one was community-driven. had a bunch of unique stuff. there's a full site archive of it: https://archive.org/details/midiru-archive-2022-02-25.7z