The music of the "Chrono" series was mainly composed by Yasunori Mitsuda. "Chrono Trigger" was the first game for which he had served as composer. After Mitsuda contracted stomach ulcers, "Final Fantasy" composer Nobuo Uematsu was brought onto the project to compose ten songs. At the time of the game's release, the quantity of its tracks and sound effects were unprecedented. Additionally, a one-disc acid jazz arrangement called ' was also released. Mitsuda went on to compose the soundtrack for ', which was never commercially released as an album.