Baek Ye-rin, also known as Yerin Baek, is a South Korean singer-songwriter. A former member of South Korean duo 15&, she debuted as a solo artist with her extended play, Frank, in 2015. Baek is credited with writing and composition for the majority of her songs, often touching on personal topics and real-life experiences. In addition to her solo career, she is also the lead vocalist and guitarist for the South Korean rock band The Volunteers and has been performing with them since 2018.