1PS (원피스, short for 1Piece-Score) was a girl group under Maroo Entertainment. They debuted with the single "The First Score" on March 3, 2014. The group disbanded in 2015.
|Yena (예나)||Leader, Vocalist||2014–2015|
|Yoonseo (윤서)||Main Vocalist||2014–2015|
|Saeha (새하)||Lead Vocalist||2014–2015|
- "The First Score" (2014)
- "Only Love OST Part.1" (2014)