Yang Yo-seob (양요섭; born January 5, 1990 in Seoul, South Korea), more commonly known as Yoseob, is a South Korean singer and musical actor. He is the main vocalist of the boy group Highlight. Yoseob was born to a small family of one older sister. He first gained interest in music and started practicing singing after listening to Brian McKnight's music. He then listened to a lot of music of a similar style, but he realized that he couldn't be biased towards a certain genre and started listening to dance music and rock as well. When he was in high school, he joined a school band where he performed a lot of hard rock and metal during their performances. Yoseob actually wanted to try modern rock, however, his seniors at that time said that it would ruin the mood and did not push through it. Yoseob became a JYP Entertainment trainee, but left after receiving a bad grade from practice reviews. He moved agencies, to M Boat Entertainment (a former sister company of YG Entertainment) where he was trained for 5 years before auditioning for Cube Entertainment where he finally became a member of BEAST after two years of training. While still a trainee at Cube Entertainment, he became a backup dancer for AJ (Lee Gi Kwang), his soon-to-be group member and former high school friend (and fellow JYP trainee), in the music videos and live performances of "눈물을 닦고 (Wiping the Tears)" and "댄싱슈즈 (Dancing Shoes)". Aside from his work with BEAST, Yoseob has released a few solo digital singles. His first was a duet with best friend and lead vocalist from Dalmatian, Daniel Chae, released in 2010 - "첫 눈 그리고 첫 키스". In 2011, he contributed respectively to the soundtracks of MBC's My Princess and KBS's Poseidon - "그 사람을 아껴요" and "안돼". In 2012, he collaborated with Apink's main vocalist, 정은지, for a track released for White Day entitled "Love Day".