As a producer you have a good feeling for melody, beats, rhythm together with the knowledge to create tracks. Perhaps you are already a singer or you play any instrument, but as a producer it is not necessary to know how to play an instrument. As a producer you work in a software program called a DAW: a Digital Audio Workstation. You can use this to create your own tracks, edits, remixes.
Nowadays it is a must to know how to produce, to be able to become a booked DJ. When having tracks under your name, fans will eventually want to hear them played live by you on big festivals!