I've thought of Future Funk, but beating it is hard, let alone consistently beat it for the talent show.
Also, the talent show isn't even announced, this is just an idea.
Have you tried 1 attempting Deadlocked? It's more iconic, so people might be more impressed because it's more likely that they have played it and know how hard it is. If not that, then maybe Clubstep.
I'm thinking of beating the level which has a wave part at 80% so tight-looking, that even I said: "At 100% speed, does this look possible to you?" for a school talent show.