Sir Robert Bryson Hall II, known professionally as Logic, is an American retired rapper, songwriter, and record producer, as well as a YouTuber, streamer and author. As a rapper, Logic released six studio albums and received two Grammy nominations.Logic began his music career in 2010, releasing the mixtape Young, Broke & Infamous; he gained popularity with his Young Sinatra mixtape series, with the response to its third iteration, Young Sinatra: Welcome to Forever, helping Logic secure a recording contract with Def Jam Recordings. Logic's first two studio albums Under Pressure and The Incredible True Story both peaked within the top five on the U.S. Billboard 200 and were certified gold.He achieved mainstream popularity in 2017 with Everybody; the album charted at number one in the United States and was certified platinum, while its lead single, "1-800-273-8255", reached number three on the U.S. Billboard Hot 100, and was a top-ten hit internationally. He also begun the commercial mixtape series Bobby Tarantino.