A disc jockey (abbreviated DJ, D.J. or deejay) is a person who mixes recorded music as it is playing. Originally, the "disc" in "disc jockey" referred to gramophone records, but now "DJ" is used as an all-encompassing term to describe someone who mixes recorded music from any sources, including cassettes, CDs, or digital audio files on a CDJ or laptop. DJs typically perform for a live or broadcast audience, but DJs also create mixes that are recorded for later sale and distribution.