What girl group writes and composes their own music and also debuted a single and music video on the same day?
Wee Woo Wee Woo (stylized as WEE WOO) is a song recorded by South Korean girl group Pristin for their first mini album "Hi! Pristin" (2017). It was released as the album's title track on March 21, 2017, and served as the group's debut single. An accompanying music video also premiered on the same day. The song was written by Sungyeon, one of the members from the group, Bumzu, Sophia Pae and Gustav Karlstrom.
Seishun Collection "Seishun Collection" (青春コレクション , Seishun Korekushon , "Youth Collection") is a song recorded by Japanese pop girl group Morning Musume. Written and produced by Tsunku, it was released on June 9, 2010 by Zetima in four editions: the normal edition and limited A, B, and C versions. The limited editions each contain a different version of the promotional video.