Ahn Hye-jin, known professionally by her stage name Hwasa, is a South Korean singer, songwriter, and television personality. She rose to prominence as a member of the girl group Mamamoo in 2014. In February 2019, she made her solo debut with the song "Twit" which topped the Circle Digital Chart and won song of the year at the Gaon Chart Music Awards.

Mamamoo is a South Korean girl group formed and managed by Rainbow Bridge World. The group is composed of four members: Solar, Moonbyul, Wheein, and Hwasa. Known for their strong live vocals, harmonies, and writing much of their material, they are recognized as one of the premier girl groups in K-pop. They are highly regarded in the industry for their talent and ability to cross multiple genres with their music; from retro, jazz, and R&B concepts in their early years to more contemporary hip-hop, as well as emotional ballads. Since their debut in 2014, they have been noted for challenging conventional beauty standards, breaking gender stereotypes, and conducting themselves in ways that most typical K-pop stars do not.