I have no idea what happened here, but I’ll toss in my opinion anyways. If you take money to do something, you should probably know how to fucking do it. Especially if that something is to perform in front of a large crowd who paid way too much to be there.
Tough to sympathize with some muppet who couldn’t be bothered to learn a skill as simple as digital dj’ing. It’s not like she was trying to juggle three decks for 12 hours.