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Gallery: Lollaplooza 2017

The four-day festival takes over Chicago’s lakefront park and turns up the volume thanks to Ryan Adams, Arcade Fire, Muse, Ron Gallo, Warpaint, Cage the Elephant, and others.

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Foster the People’s Mark Foster

The grooving bandleader strapped on his Gibson ES-335 for the hypnotic number, “Pseudologia Fantastica.”