A disc jockey is responsible for several tasks depending on their workplace and position in the music industry. In a radio station, a disc jockey is responsible for playing tracks from a set playlist that is given to them by station management. This playlist will often target a specific audience and music genre. Also, a radio station disc jockey is responsible for answering calls from listeners. These calls may be the result of an artist interview, station contest, or even just to comment on the selections being played. The disc jockey is in charge of interviews conducted with musicians of the genre chosen by the radio station, as well as being responsible for announcing commercials in accordance with the stations set programming requirements.

As a disc jockey for a dance club, the DJ will be responsible for playing songs that are both entertaining and will affect the audience in a desired manner. This may include playing requested songs as well as setting up selections that will direct the audience to a certain area. This is done by selecting tracks that have the effect of pushing the audience to visit the bar, check out a promotional item sales booth, prepare for a contest or just to dance.