A DJ, or disc jockey, is a person who plays recorded music for an audience. They mix tracks, create transitions, and often add effects to enhance the listening experience. DJs are commonly found at parties, clubs, and festivals, where they curate playlists that keep the crowd engaged and dancing. In addition to playing music, many DJs also produce their own tracks and remixes. They use various equipment, such as turntables and digital audio workstations, to manipulate sound. Notable DJs like David Guetta and Calvin Harris have gained international fame for their unique styles and contributions to the electronic dance music scene.