Template:Infobox Released in Japan under the name Trusty Bell: Chopin no Yume, Eternal Sonata is an original RPG developed by Tri-Crescendo for Bandai Namco and released summer 2007 for the Xbox 360.
The game tells the story of the final few hours in the life of the Polish pianist and composer Frédéric Chopin, who experiences a vivid dream on his deathbed which transports him to another world. There he meets Polka, a young girl whose terminal illness allows her to use magic, and the street urchins Allegretto and Beat.
In September 2007, Bandai Namco announced that the game would also be released for the PlayStation 3, aiming for a Japanese release in Spring 2007. The PS3 release will have two additional playable characters, more dungeons and a clothing system.