"Work It" is a hip hop song written by American rapper Missy Elliott and her producer Tim "Timbaland" Mosley for Elliott's fourth studio album Under Construction (2002). The song's musical style, and production by Timbaland, were heavily inspired by old school hip hop from the early 1980s. It samples Run-D.M.C.'s "Peter Piper" and Rock Master Scott & the Dynamic Three's "Request Line". Released as the album's first single on September 16, 2002, the track reached the number two position on the US Billboard Hot 100, becoming Missy Elliott's most successful single to date. A remix of this song features 50 Cent. The end of the song samples "Take Me to the Mardi Gras" by Bob James and was also sampled in one of Elliott's first features "The Things That You Do", and the synth pattern in the rhythm track samples the intro of "Heart of Glass" by Blondie.