Turntablism refers to the extended boundaries and techniques of normal DJing innovated by hip hop. One of the few first hip hop DJ's was Kool DJ Herc, who created hip hop through the isolation of "breaks" (the parts of albums that focused solely on the beat). In addition to developing Herc's techniques, DJs Grandmaster Flowers, Grandmaster Flash, Grand Wizard Theodore, and Grandmaster Caz made further innovations with the introduction of scratching.

Traditionally, a DJ will use two turntables simultaneously. These are connected to a DJ mixer, an amplifier, speakers, and various other pieces of electronic music equipment. The DJ will then perform various tricks between the two albums currently in rotation using the above listed methods. The result is a unique sound created by the seemingly combined sound of two separate songs into one song. Although there is considerable overlap between the two roles, a DJ is not the same as a producer of a music track.^[50]

In the early years of hip hop, the DJs were the stars, but their limelight[citation needed] has been taken by MCs since 1978, thanks largely toMelle Mel of Grandmaster Flash's crew, the Furious Five. However, a number of DJs have gained stardom nonetheless in recent years. Famous DJs include Grandmaster Flash, Afrika Bambaataa, Mr. Magic, DJ Jazzy Jeff, DJ Scratch from EPMD, DJ Premier from Gang Starr, DJ Scott La Rock from Boogie Down Productions, DJ Pete Rock of Pete Rock & CL Smooth, DJ Muggs from Cypress Hill, Jam Master Jayfrom Run-DMC, Eric B., DJ Screw from the Screwed Up Click and the inventor of the Chopped & Screwed style of mixing music, Funkmaster Flex, Tony Touch, DJ Clue, and DJ Q-Bert. The underground movement of turntablism has also emerged to focus on the skills of the DJ.

Mixtape DJs have also emerged creating mixtapes with different artists and getting exclusive songs and putting them on one disc, such as DJ White Owl, DJ Skee, DJ Drama and DJ Whoo Kid, DJ Scholar.