Solar is the stage name of Kim Yong Sun, a South Korean singer and actress best known for being the leader and main vocalist of the K-pop girl group MAMAMOO. Born on February 21, 1991, she debuted with MAMAMOO in 2014, and the girl group was considered to be one of the best debuts of the year. The group has released several soundtracks to popular television dramas since, including “Marriage, Not Dating” (2014), “Spy” (2015) and “Twenty Again” (2015). Solar made her acting debut in the 2015 television drama “Imaginary Cat” and also joined the cast of "We Got Married" in 2016 with singer Eric Nam.