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 No. 85 on the Billboard 200. The album was appraised by critics for its technical and heavy style of music.