Right, of course, if a DJ is getting ready, they're not DJing, so you should look for one in the quiet parts of the event. You set off speedily down the path and look for clues as to where a DJ might be: dropped record sleeves, misplaced power cables, complaints about house music whispered on wind... but so far, nothing. Camp and camp go by and it looks like there's neither a DJ Plot Device, or anyone else who'd like to cover for them, in evidence. And now, uh oh, looks like you're coming to the edge of the event.