Disc jockey
There are several types of DJs. A radio DJ plays music files (like mp3) or recorded CDs on a radio station and announces the names of the songs. A club DJ plays music files or recorded CDs over a PA system (an amplifier and loudspeakers) at a nightclub, rave, or disco. A hip hop DJ uses turntables and vinyl records to do scratching and make music while other hip hop musicians do rapping (rhythmic type of singing). A Reggae DJ plays recordings of rhythm instruments and then rap on top of the prerecorded track with a microphone.