Silent Discos...

Silent discos, in which people dance to music played through personal headphones rather than speakers, was once the preserve of music festivals and special club nights. But now it is becoming increasingly popular at weddings and private parties, enabling teenagers to dance to their hearts' content without keeping their parents or the entire party on edge.

This stuff is ridiculous, imagine walking into a silent room only to see a group of people sweating and rocking themselves out when you can't even hear any noise not to talk of loud music...lol.