One of the most unsettling things I've ever witnessed:
The UBER Silent Disco.
This is saying a lot.
Imagine you're in a club, you can feel the movement of bodies reverberating through the floor, watch the bodies twist and groove and the DJ spin, witness the lights and strobes flash past your eyes... but you don't hear a single sound.
That was the UBER Silent Disco at Spring Awakening; wireless headphones rigged directly into the DJ's equipment. Conceptually, it's brilliant: A way of hosting a rave in, let's say, a residential basement without the cops showing up or pissing off the neighbors. In theory, you could host a party without security or restriction, and do all the drugs your brain could handle. And then some! And beer wouldn't be $10 per can. And water not $5 a bottle.
In practice, it was maddening.
I opted out of the headphones because I was feeling masochistic, I suppose; or maybe I just wanted to really catch the weirdness of it.
At the rest of the festival, it was easy to explain the weird and strange away: people lost in the movement and beat, fluttering about to the music and noise. But without the context of the music in your own ears at the time, the brain fails to make certain connections to explain this all, and you lapse into a semi-comatose state trying to rebuild your synapses.
Mind you, this all happened to me in about a span of eight seconds, so the pieces of grey matter were pretty easily picked up and I regained my sanity shortly thereafter.