What's the POPIPA!?

 is a song by Poppin'Party.

It is the coupling track for their 13th single, Jumpin'. It was released on February 20, 2019.

It was written by Nakamura Kou, and arranged and composed by Kikuta Daisuke.

Video
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Live Performances

 * February 23, 2019: Jumpin' Music♪ (short ver.)
 * October 8-9, 2020: Kirakira☆Festa Day! & Dokidoki♪Special Day!