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.
Sistar Sistar (, often stylized as SISTAR) was a South Korean girl group formed in 2010 by Starship Entertainment. The group consisted of Hyolyn, Bora, Soyou, and Dasom. Their debut studio album "So Cool" was released on 9 August 2011. Their second album, "Give It to Me," was released on 11 June 2013. Their biggest hits include "So Cool", "Alone", "Touch My Body", "Loving U" and "Give It to Me". Their fourth single, "So Cool," debuted at number one at "Billboard" Korea K-Pop Hot 100 singles chart.