A DJ, or disc jockey, is an artist who selects and mixes live or recorded music for an audience at events such as parties, nightclubs, weddings, and other events. DJs use a variety of tools, such as mixers, CD players, and DJ software, to select and mix music tracks. DJs can also use sound effects and samples to create new versions of songs or to create original music. DJs can also act as entertainers, interacting with the audience and creating a party atmosphere. In general, a DJ is in charge of setting the scene for the event and making people dance and have fun.