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.
Last One Standing (song) "Last One Standing" is the debut single by British girl group Girl Thing. It was released on 19 June 2000 as the lead single from their self-titled debut studio album.