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