YB, also called Yoonband or Yoon Do Hyun Band, is one of the most famous rock bands in South Korea. It consists of Yoon Do-hyun (vocals and guitar), Huh Joon (guitar), Kim Jin-won (drums), and Park Tae-hee (bass guitar). Scott Hellowell (guitar) has become a member of YB since 2011. The band is named after the main vocalist and main producer, Yoon Do-hyun, who had originally performed solo and then later formed the band. They are signed by DEE Company and Universal Music Group Korea.