Originally a quartet, its current members consist of In Ho-jin, Song Woo-jin and Kim Young-woo.
[1] In 2019, they joined with female vocal group The Barberettes and performed together under the name "SBSB" (스바스바).
[3] After a stint performing cover songs at college festivals and events, the quartet came to national prominence by winning the Daesang (Grand Prize) at the 16th Yoo Jae-ha Music Competition for their original song "Sweet Sorrow".
They also came to prominence with a much larger audience for performing the soundtracks of popular television dramas and their appearances on the MBC singing competition Show Survival (쇼바이벌) and the KBS music program Immortal Songs: Singing the Legend.
They also combined with The Barberettes to form a mixed group called "SBSB" and performed together on Immortal Songs.