Disc jockey

A disc jockey (abbreviated DJ, D.J. or deejay) is a person who plays recorded music for an audience, either a radio audience if the mix is broadcast or the audience in a venue such as a bar or nightclub. In venues such as a club event or rave, this is an audience of dancers. Originally, "disc" (uncommonly spelled "disque" in French or commonly "disk" in American English) referred to phonograph records, not the later compact discs. Today, the term includes all forms of music playback, no matter which medium is used (e.g. vinyl, CDs, MP3 players).

The title "DJ" is also commonly used by DJs in front of their real names or adopted pseudonyms as a title to denote their profession and the music they play (e.g. DJ Pierre).

https://en.wikipedia.org/wiki/Disc_jockey