Complete Best
The soundtrack music is available on three different albums composed by Naoki Satō and a variety of other artists who composed insert songs used in the series. The first and second soundtrack albums were released on November 2, 2005 and April 5, 2006 respectively. The third soundtrack, titled "Eureka Seven: Complete Best" include the full-length versions of the opening and ending themes for both the series and game, as well as the insert song for the final episode.