djaladdin

“DJ”
A disc jockey (also disk jockey or DJ) is a person who selects and plays prerecorded music for an audience. Many DJs also speak to the audience, either to give the names of the songs and information about the performers (radio DJs) or to rap or chant along with the music (reggae DJs).
There are several types of DJs: radio DJs play music that is broadcast on AM, FM, shortwave or digital radio stations; club DJs select and play music in a club, disco, a rave, or even a stadium;hip hop disc jockeys select, play and create music with multiple turntables as a hip-hop artist and/or performer, often backing up one or more MCs; a reggae disc jockey (deejay) is a vocalist who raps, toasts, or chats over pre-recorded rhythm tracks; and mobile disc jockeys travel with mobile sound systems and play from an extensive collection of pre-recorded music.
The term was first used to describe radio announcers who would introduce and play popular gramophone records. These records, also called discs by those in the industry, were "jockeyed" by the radio announcers, hence the name, which was soon shortened to DJ or deejay.The physical act of selecting and playing sound recordings is commonly referred to as DJing (or deejaying), playing or spinning. The resulting performance is called a DJ set.