Eureka Baby

 is the eighth single by Aso Natsuko. It was released on July 20, 2011, and peaked at #50 on the Oricon singles chart.

Single Information
Eureka Baby was used as the first ending for the anime Baka to Test to Shoukanjuu ni!.
 * Lyrics: Hata Aki (track 1), Aso Natsuko (track 2)
 * Composition: Maeyamada Kenichi (track 1), Kato Yuusuke (track 2)
 * Arrangement: Maeyamada Kenichi (track 1), Watanabe Kazunori (track 2)

Tracklist

 * 1) Eureka Baby (c)
 * 2) Pop step trip!
 * 3) Eureka Baby (エウレカベイビー) (Instrumental)
 * 4) Pop step trip! (Instrumental)