clc debuted in 2015 with a five-member lineup of seunghee, yujin, seungyeon, sorn, and yeeun. they released their first ep "first love", including the lead single "pepe", on march 19. their debut showcase was held the day before at the acts hotel in seoul, where they performed their debut song for the first time. they made their debut music show performance on "m countdown". "pepe" is a retro dance number written by duble sidekick and yang geng. part of the song's choreography was choreographed by rain.