ANACHRONISTIC: But Muse’s exploding weather balloons of confetti were fun.

The headliners were Muse, and when the lights went out, we rose in the dark to the sound of JFK’s voice intoning a speech about government conspiracies whose text crawled across the screen. When the screen went blank, Muse walked out in green and purple smoke to the opening galactic trance of their “Take a Bow.” Grids pulsed behind them on three screens, and Matthew Bellamy keened softly, “You will burn in Hell.” A ray of light spread like a solar eclipse on the moving crowd — when Bellamy raised his arm and pointed to the rafters, so did the arena. Protest rallies, riots, and lily pads filled the screens; giant white weather balloons floated into the crowd and burst with confetti. Unlike Cold War Kids, Muse actually are anachronistic. Skinny jeans are in, but neon pianos and streaming images of robots and codes are, sort of, obsolete. Muse played “Invincible,” “Starlight,” “Supermassive Black Hole,” and through it all Bellamy was pale and calm. And when Muse ended with “Knights of Cydonia,” his mouth formed a tiny black hole over the mic, and into the black night we marched.