Classmate

Classmate (クラスメイト) is the Ending Theme of Rhythm Heaven Megamix. The song was performed by Pajama Musume Club (Karen, Azuki Moeno, Hitomi Yoshida), written and composed by Tsunku♂, and arranged by Kaoru Okubo. The vocals were removed in the international version.

It was performed live in Rhythm Tengoku: The Uta Matsuri+, which is the only time the song was heard in full.

Commentary
The following is commentary given on the Tsunku♂ Official Blog.