1PS is a four-member South Korean girl group formed in 2014 by Maroo Entertainment, the same agency that handles Supernova. 1PS is an abbreviation for "One Piece Score" which highlights the group’s unity when making songs; the four members of the group become "one piece" to make a musical "score". The name is pronounced as simply one piece, and is not to be confused with the manga of the same name. The band consists of the members Yena, Yoonseo, Jieun and Saeha.