Kana Asumi
The first season anime, along with the two-episode addition, used two pieces of theme music, one opening theme, and one ending theme. The opening theme is by Kana Asumi, Kaori Mizuhashi, Ryoko Shintani, and Yuko Goto; the single containing the opening theme was released on January 24, 2007. The ending theme is by Marble; the single containing the ending theme was released on February 21, 2007. The first season's original soundtrack was released on April 25, 2007. A character song mini-album named "Hida Chara" was released on September 5, 2007 containing songs sung by voice actors from the anime. A maxi single entitled was released on June 4, 2008, featuring the opening theme to the "Hidamari" web radio show sung by Asumi.