Do DJs play all their own music?

Most DJs don’t produce their own music. Some DJs do produce their own music on music production software which they then perform live.

Most DJs don’t produce their own music. DJs usually join record pools or music streaming services. Some DJs buy songs from popular artist sites like Band Camp or get songs sent to them in subscriptions. Some DJs do produce their own music on music production software which they then perform live.