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.
Summer Girl (song) "Summer Girl" is the debut single by Canadian pop band Stereos, written by Patrick Kordyback from their self-titled debut album. It was the song they performed on MuchMusic's disBAND reality show, which led them to being signed by Universal Canada. It was released as a single in 2009. The song is about meeting a girl and wanting to hook up with her despite the fact that she has a boyfriend.