Dreamt I was DJing a wedding on a glass dance floor

I'm standing behind the decks and the floor is clear — I can see everyone's feet shuffling underneath, like they're dancing on a frozen lake. But the vinyl is warping because of the heat from the lights, and I keep trying to cue the next track but the needle slides off. Nobody notices because they're all looking up at the ceiling, which is full of mirrors I'd never seen at any real venue.