Mudvayne : : Nu-Metal : L.D. 50 is the debut studio album by American heavy metal band Mudvayne. Released in 2000, it is the band's first release on Epic Records, following the independently-released extended play, Kill, I Oughtta. L.D. 50 was coproduced by GGGarth & Mudvayne and executive produced by Steve Richards & Slipknot member Shawn "Clown" Crahan. The band's elaborate visual appearance resulted in increased recognition of the band and L.D. 50 peaked at #85 on the Billboard 200. The album was appraised by critics for its technical and heavy style of music.