Ladytron's Helen Marnie / Photo by Lucy Hamblin

"I'm melting," complained angular-haired Ladytron co-frontwoman Helen Marnie between songs, adding further words to what every concertgoer under Bonnaroo's Other Tent already knew -- it was extremely hot. But despite the oven-on-broil temps, which Marnie, clad in black head-to-toe, certainly wasn't dressed for, fans danced along to the dark, electro-doom thumps and grinds of Ladytron's lengthy mid-afternoon set like the six-piece's tunes provided some sort of weatherly escape.

Twizzle-haired songstress Mira Aroyo joined Marnie and spat lusty automaton rhymes over a backing band of boys, which feverishly fidgeted with knobs, guitars, and bass to build a sound conjuring a mental image of a sleek 27th-century meat-grinder, or perhaps, a jackhammer slamming a pit of outdated computers; the sweltering, rhythmic post-industrial crunch blared across the crowd, inching into the nuts and bolts of each fans' joints.

"Seventeen," evidently a fan favorite, was met with wild hollers as both the festival's hipster and glow-bracelet-and-pacifier crowds found their midday fix. And new album Velocifero's spot-on, heart-rhythm-altering swagger shook the sweat from Bonnaroovians' heads with tracks like "Black Cat," sung by Aroyo in Bulgarian, as well as "Runaway," its fluxing bass and cold vocals blowing through the sweat drenched crowd, which didn't seem to mind the heat at all, using Ladytron's electro-clash renderings as a heat shield of sorts.

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Here's what the band's fans had to say after the set: