This scam sounds like one making the rounds earlier only notched up. That scam worked by suckering a poor artist into thinking a gig was coming their way. Payment would be sent prior to the gig (how often does that happen in legitimate life??). The payment would be with a money order - one that looked real enough. It was also always more than the amount agreed on. The performer would deposit the money order - or maybe it was a cashier's check - and then the scammer would email back saying "Oops, we overpaid you. Could you send us back the difference?" The performer would return to overage and then the original check would bounce.

These are scammers of the lowest kind, preying on folks who are trying to do honest work. It's one thing to hit on someone's greed but hardworking artists have fallen for this and suffered for their honesty.

Basically, if it's too good to be true, it isn't.
Beware folks!
Emily S