A Perfect Circle played to a sold-out Red Rocks crowd on Tuesday, August 2, 2011 with openers Red Bacteria Vacuum. Spotted in the crowd were dozens of A Perfect Circle t-shirts and the Flaming Lips' Wayne Coyne. The Flaming Lips were set to play the next night at Red Rocks. Photos by Aaron Thackeray. Read Music Editor Dave Herrera's A Perfect Circle at Red Rocks concert review.