Complex sentence: De'Mario Monte Thornton (born June 13,1985), known as Raz-B, is an American singer and actor, most famous for being a founding member of R&B boy band B2K.
Split into simpler sentences: De'Mario Monte Thornton (born June 13,1985), known as Raz-B, is an American singer and actor. He was a founding member of R&B boy band B2K.