Lee Sun-mi, better known as Sunmi, is a South Korean singer. She debuted in 2007 as a member of South Korean girl group, Wonder Girls, and left the group in January 2010 to pursue her academic career. After a three year hiatus from the music scene, Sunmi resumed her career as a soloist in August 2013 with her first digital single, "24 Hours". In 2015, Wonder Girls returned but in 2017 the group disbaned after she didn't renew the contractat with JYP.