Who is the greatest DJ in the world today?

The inaugural MusicRadar DJ Expo is coming at the end of June. Ahead of the event kicking off, we want you to tell us who you think is the greatest DJ (or DJs) in the world today.

But what makes a DJ great? And for that matter - given the way that technology has blurred the line between DJing and live performance - how do you define what DJing is?

Ultimately, we'll leave it up for debate, but we'd suggest that nominations should be limited to artists who play sets made up of pre-recorded music, be it their own or that of other artists. They should be groundbreaking and influential too, either through their use of technology, their technical skill or just there totally on-point selections. Finally, we're only counting DJs who are still active and performing today.

Right now we're looking for your nominations, which we'll use to draw up a shortlist so that voting can begin. So let us know your suggestions for the world's greatest DJ in the comment section below or via Facebook or Twitter.