K-pop duo EXO-SC is the second official sub-unit of the South Korean boy band EXO. Following their first official offshoot, EXO-CBX, EXO-SC made their debut in 2019. Comprising founding EXO members Sehun and Chanyeol, the pair -- also known as "Exo-Se-Chan" -- issued its first EP, What a Life, in summer 2019 on parent label S.M. Entertainment. Topping the Korean Gaon chart and landing in the Top 10 of the U.S. Heatseekers and World Albums charts, the six-song set remained close to EXO's typical sound, incorporating elements of R&B, hip-hop, and electronic pop. The EP was produced with Korean hip-hop artist Gaeko and included the singles "Just Us 2" and "Closer to You." The following year, the pair returned with their first official album 1 Billion Views. Featuring guest appearances by Penomeco, 10cm, and returning producer Gaeko, the LP also included solo tracks from Sehun ("On Me") and Chanyeol ("Nothin'"). ~ Neil Z. Yeung, Rovi