Sir Robert Bryson Hall IIborn January 22, 1990, known professionally as Logic, is an American streamer, author, retired rapper, singer, songwriter, and record producer.

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 (2013), helping Logic secure a recording contract with Def Jam Recordings. Logic's first two studio albums — Under Pressure (2014) and The Incredible True Story (2015) — both peaked within the top five on the U.S. Billboard 200 and were certified gold.