Yoon Do-hyun is a South Korean singer and television personality, best known as the lead vocalist of the rock band YB. He gained popularity for his powerful voice and dynamic stage presence, contributing to the band's success since its formation in 1994. In addition to his music career, Yoon Do-hyun has appeared on various television programs, showcasing his charm and versatility. He has hosted shows like Yoon Do-hyun's Love Letter, where he interacted with fans and fellow artists, further solidifying his status in the South Korean entertainment industry.