About Eternal Sonata: This is an original RPG created by tri-Crescendo, one of the developers of Baten Kaitos and Baten Kaitos Origins. The game was released on June 14, 2007 for the Xbox 360 in Japan under the title Trusty Bell: Chopin's Dream. The game battle system centered around 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.