"Rockit" is a composition recorded by American jazz pianist Herbie Hancock and produced by Bill Laswell and Michael Beinhorn. Hancock released it as a single from his twenty-ninth album, Future Shock.
Scratching, sometimes referred to as scrubbing, is a DJ and turntablist technique of moving a vinyl record back and forth on a turntable to produce percussive or rhythmic sounds. A crossfader on a DJ
A DJ scratching a record
In the mid-1970s in the South Bronx, a young teen DJ named "Grand Wizzard Theodore" (right) invented the "DJ scratch" technique. Other DJs, like Grandmaster Flash, took the technique to higher levels.