I'd like to plug one of the most remarkable video game composers of our
time Nobuo Uematsu who did the score for the Final Fantasy series et. al.
This largely untrained (but natural genius) composer from Japan is among the finest video game composers out there. The soundtracks of most of the Final Fantasy video games are available online as well as the printed notation for some of the Final Fantasy VII songs, the Final Fantasy that really got some musical attention from the music world.
Uematsu works as a team and is primarily a computer/synth composer and does not work with a keyboard hardly at all. A mental composer who programs directly into a computer, but has the most remarkable ear for rich harmonies and splendid melody lines.
I'm sure the OSTs are easily obtainable online by searching Uematsu or Final Fantasy.
Sincerely, JRM Yurshta