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.

Yellow Flower is the sixth extended play (EP) by South Korean girl group Mamamoo. It was released by RBW on March 7, 2018 and distributed by LOEN Entertainment. The EP contains seven total songs, including the singles "Paint Me" and "Starry Night". The EP is the first album under the Four Seasons, Four Colors project.