My wife, son, and I just returned from our first music festival. Bonnaroo 2011 (aka Dustaroo 2011) sported rather oppressive conditions during daylight hours with a thick swirling layer of dust. Once dusk finally arrived however, Bonnaroo was magical. Although the feel of the experience was literally night and day, the music was excellent around the clock.
We (or I) took in the following sets or parts of sets:
Gogol Bordello
My Morning Jacket
Arcade Fire
Portugal. The Man
Buffalo Springfield
Sleigh Bells
Omar Souleyman
Eminem
The Black Keys
The Drums