Otis Jackson Jr. (born October 24, 1973), known professionally as Madlib, is an American DJ, music producer, multi-instrumentalist, and rapper. One of the most prolific and critically acclaimed hip hop producers of the 2000s, he is known for his collaborations with numerous hip hop artists under a variety of pseudonyms, including with MF DOOM (as Madvillain), J Dilla (as Jaylib), and Freddie Gibbs (as MadGibbs). Madlib has described himself as a "DJ first, producer second, and MC last," and has done several projects as a DJ, mixer, or remixer.