Nobuo Uematsu, who has been working at
Square (SquareEnix) for nearly twenty years, is the composer behind the music from Final Fantasies 1 - 9. He also composed parts of the Saga series soundtrack, some of the Chrono Trigger music (though Yasunori Mitsuda did most of it), and a couple of the tracks in FFX.
He
now has his own
band, the Black Mages, who perform rock arrangements of Uematsu's music. Also, www.ocremix.org and various videogame remix projects have
done arrangements of his work.
Nobuo Uematsu plans to retire from Squeenix this year, but he
will always be widely regarded as one of the best videogame music composers.