On September 27th, KBS's 'Poseidon' released part one of their OST series, which featured the vocal talents of�B2ST's Yang Yoseob. Yoseob's new song, "No", was a collaboration piece between�Rado (of Huh Gak's "Hello") and production duo�Ji In and Wontag, the men behind MBLAQ's latest releases. The song features sorrowful lyrics of a man who has no choice but to let go of his lover. The song is considered to be Yoseob's first attempt at a standard ballad, so fans and drama viewers alike were highly anticipative of the song. Check it out below! Source + Photos: OSEN via Naver