Matthew David Morris, better known as MattyB or MattyBRaps, is an American singer/songwriter, rapper, and dancer who launched his career by gaining notoriety from YouTube, posting remix videos of popular music. 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, with the help of writer Travis Thrasher.