She's the pop star who makes Lady Gaga look like she shops at Loehmann's. Icelandic art-rocker Björk, 46, commanded the headliner spot at Denmark's Roskilde Festival this weekend, emerging onstage encased in a tangle of giant, black, worm-like tubing. A multi-colored hawk's nest of a wig was perched atop her spritely features, now showing some age.

Malte Kristiansen / AFP - Getty Images

Icelandic singer Bjork performs at the Roskilde Festival in Roskilde on Sunday, July 8.

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Björk's main set, a multimedia visual feast, consisted of 15 songs, oscillating between familiar hits like "Hunter" and "Isobel" and newer songs from her 2011 release "Biophilia" -- songs like "Virus," "Mutual Core," and show opener "Cosmogony."

The two-song encore consisted of "One Day," from her first solo album "Debut," and "Declare Independence," a rousing cry of rebellion off "Volta." 

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More photos of the performance are available at bjork.fr.

Watch Björk perform "Virus," from "Biophilia," in the audience-shot video below.

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