Exo-CBX (Hangul: 엑소-첸백시 Exo-Chen-Baek-Xi; stylized as EXO-CBX) is the first official sub-unit of South Korean-Chinese boy group Exo. Formed by SM Entertainment in 2016, the group is composed of three Exo members: Chen, Baekhyun, and Xiumin. Their debut extended play Hey Mama! was released on October 31, 2016.
On July 29, 2016, Chen, Baekhyun and Xiumin appeared in a video titled “Reservoir Idols” during Exo’s concert tour Exo Planet 3 – The Exo’rdium. They then released an original soundtrack titled “For You” for the SBS television drama series Moon Lovers: Scarlet Heart Ryeo on August 23, 2016. As a result, it was speculated that they would form Exo’s first sub-unit. This was confirmed by SM Entertainment on October 5. On October 23, they performed “For You” for the first time as a unit at the 2016 Busan One Asia Festival. On October 24, the unit’s name was announced to be Exo-CBX (shortened from ChenBaekXi), after the first letter of the members’ stage names.
On October 31, Exo-CBX released their debut extended play Hey Mama!, which contains five tracks with a variety of genres including electronic dance, R&B ballad and retro pop, along with the music video for the title track. The group made their debut performance on M Countdown on November 3. On November 6, the “Reservoir Idols” video was officially released as a music video for “The One”, one of the tracks from the album. Hey Mama! topped the Billboard World Albums chart and South Korean’s Gaon album chart. Later in November, Exo-CBX recorded a remake of the original soundtrack “Crush U” for the game Blade & Soul. They performed the song on November 18 at the N-Pop Showcase concert, part of the 2016 Blade & Soul world championship tournament. On December 25, “Crush U” music video was released.
In January 2018, via an online program on LINE, they announced that they have prepared for their first Japan arena tour called “Magical Circus” in May and June. The tour will have eight shows with four cities in Japan, including: Yokohama, Fukuoka, Nagoya and Osaka. Their first Japanese studio album, Magic, was released in May 2018.