The game is centered on the Polish romantic pianist and composer Frédéric Chopin, who died of tuberculosis at the age of 39. The story envisions a fictional world dreamed by Chopin during his last hours that is influenced by Chopin's life and music, and in which he himself is a playable character, among others. The game features a selection of Chopin's compositions played by pianist Stanislav Bunin, though most of the original compositions were written by Motoi Sakuraba. The game's battle system centers on musical elements and character-unique special attacks. Light and darkness plays a part in the appearance and abilities of enemies on the battlefield, as well as the types of magic that can be cast.