Matthew David Morris (born January 6, 2003), better known as MattyB or MattyBRaps, is an American children's artist, known for posting remix videos of popular music on YouTube.
Morris has released numerous covers and remixes of mainstream music since he began his career in 2010, His first cover was of Eenie Meenie by Justin Bieber. On August 1, 2014, MattyB's YouTube channel surpassed one billion views. As of July 13, 2015, he has posted over 90 additional covers and 20 original songs on his YouTube channel. On August 27, 2015, his debut EP premiered on YouTube, titled "Outside the Lines". The album consists of four original songs. On June 7, 2016, Morris released a memoir book That's a Rap.