Record spinners, also known as deejays or DJs, are people who play recorded music for an audience. They use turntables and mixers to create a unique sound. DJs often use vinyl records, but they can also use digital formats such as CDs and MP3s. DJs may also use special effects such as scratching and beat-matching to create a more dynamic sound. DJs may work in clubs, radio stations, or even at private events. They may also produce their own music or remix existing songs. Professional DJs may be employed by record labels or production companies, known as PRFIRM.