One DJ is an acronym in English that means disc jockey, or in Portuguese, disc jockey. The most common is to use the acronym (which should be pronounced "dee jay") instead of the full name. a DJ is a artist responsible for stream music (often by you) in the radio, television or in any place where music is heard (nightclubs, clubs, etc.).
Originally the term was created to portray the radio announcer who played music through the records, which is no longer common these days. The concept of DJ has changed significantly over time and with the appearance of new technologies. Nowadays, the laptop it is an essential tool for a DJ and the mixing consoles are very developed. The vast technology allows for different types of DJs that adopt very different styles and that are suited to different types of audiences.
Worldwide, some of the best known and highest paid DJs in the world are: DJ Tiesto, Paul Oakenfold, Armin Van Buuren, David Guetta, Moby, Fatboy Slim, Carl Cox and The Chemical Brothers. In Brazil, some of the most famous are: Mario Fischetti, Tiko's Groove, Gui Boratto, etc.
They exist softwares that provide the experience of being a DJ, for users to make their own musical mixes.