I love music, and I really like game music.
From the 8bit till PS4, I heard very good tunes.
This is the best what I know in my 23 years off gaming (i'm 33 years old)
1: Monty on the run (C64) the game is hard as arse, but the music is so great. The Sid chip have ONLY 3 tunes (+ some dirty tricks).
2: Turrican 2 Intro (Amiga 500) played allot when I was a kid.
3: Turrican 2 level 2 (Amiga 500)
4: SoulBlade (PSX) one off the best intro's on the PSX, got this intro on a demo disc. Later I got the game, great times.
5: StarFox (snes) A friend off my got a snes with this game, I was blow away by the gfx and the music was so great.
6: Rival Schools (PSX) underated fighting game with great music and style
7: Gitaroo Man level 2 music (PS2) very strange game,but the style and music is great
8: Daytona USA (Saturn) very bad port of sega best arcade racing games. The OST is stange and great
9: Ridge Racer Type 4
10: Shadow of the Colossus (PS2/PS3)