Famous as the lead vocalist of the South Korean pop duo Akdong Musician, a.k.a. AKMU, Lee saw her debut album, Play, top the South Korean Gaon Album Chart and rise to number two on the American Billboard World Albums Chart.
Before rising to fame on the reality talent program K Pop Star 2, she wrote a song titled 'Galaxy' that was featured in a commercial for Samsung.
She has earned more than 2 million Instagram followers to her akmu_suhyun account.
She and her brother and AKMU collaborator, Lee Chanhyuk, spent their childhoods in both South Korea and Mongolia.
When the Lee siblings participated in K Pop Star 2, singer and JYP Entertainment founder Park Jin Young, a.k.a. J.Y. Park, complimented their performances.