The core of the discography is the two original soundtrack albums. The visual novel's soundtrack, which was also used for the anime series, was produced by Key Sounds Label and released in 2002. The music on the soundtrack was composed and arranged by Jun Maeda, Shinji Orito and Magome Togoshi. A soundtrack for the animated film was released in 2005 by Frontier Works. The music on the film soundtrack was mainly composed and arranged by Yoshikazu Suo. Two remix albums were released for the visual novel in 2000 and 2003, and a remix album was released for the film in 2005. A single for the visual novel was released in 2001 containing a vocal version of a background music track from the game. An EP for the visual novel was released in 2006 covering the three pieces of theme music used in the game as well as two remix versions of the opening and ending themes.