Mate, you had ONE job to do.... And things start off so well. The bride's grinning from ear to ear. And then, the music changes, and her face drops along with the beatz.
While she does her best to maintain a facade of "This can't be happening, this is a dream, it's all going to be OK", the realisation that this is in fact her reality sinks in. She stops on the spot and simply gives a negatory nod, while mumbling something (presumably several profanities).
One could argue that she could've just owned it, and started 'big fish little fishing' it down the aisle, but it's impossible - the music is that bad.