Mitsuda

The ambitious project had also attracted the attention of composer Yasunori Mitsuda (), character designer Kunihiko Tanaka (), and art director Yasuyuki Honne ().

After wrapping, Mitsuda and Kato played Chrono Cross to record their impressions and observe how the tracks intermingled with scenes; the ending theme brought Kato to tears.

A sound programmer at the time, Mitsuda was unhappy with his pay and threatened to leave Square if he could not compose music.

Composer Yasunori Mitsuda was pleased with the project, exclaiming "finally!" after receiving the news from Square Enix and maintaining, "it's still a very deep, very high-quality game even when you play it today.

Kato became friends with composer Yasunori Mitsuda during development, and they would collaborate on several future projects.

Mitsuda and Kato planned music samples and sound effects with the philosophy of "a few sounds with a lot of content".

Mitsuda arranged versions of music from the Chrono series for Play!

Mitsuda composed new music and drew on a personal collection of pieces composed over the previous two years.

Mitsuda wrote each tune to be around two minutes long before repeating, unusual for Square's games at the time.

Yasunori Mitsuda also adapted certain songs from Radical Dreamers while scoring Cross. citation Radical Dreamers was consequently removed from the series' main continuity, considered an alternate dimension.