Aīn Taisō / Aīn! Dance no Uta

"Aiin Taisō/Aiin! Dance no Uta" (アイ〜ン体操/アイ〜ン!ダンスの唄) is the fifth single of the Hello! Project subgroup Minimoni. It was released on April 24, 2002 and sold 212,230 copies.

This single was a collaboration with comedian Ken Shimura in his Baka Tono-sama persona, and was jointly credited to Baka Tono-sama to Minimoni Hime (バカ殿様とミニモニ. 姫). A double A-side, its title tracks were both built around the interjection "Aiin!", which Shimura had already established as a catch phrase.

Track listing
The lyrics to "Aiin Taisō" were written by Hiroyuki Tomonaga; its music was composed by Akihiko Takashima. "Aiin! Dance no Uta" was written and composed by Tsunku.
 * 1) "Aiin Taisō" (アイ～ン体操)
 * 2) "Aiin! Dance no Uta" (アイ～ン！ダンスの唄)
 * 3) "Aiin Taisō (Original Karaoke)"
 * 4) "Aiin! Dance No Uta (Original Karaoke)"

Members at the time of single

 * Mari Yaguchi (矢口真里)
 * Mika Todd (ミカ)
 * Nozomi Tsuji (辻希美)
 * Ai Kago (加護亜依)