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.
Warpaint’s Jenny Lee Lindberg
While her 6-string bandmates rock nothing but offset Fenders, the band’s longtime bassist covers the gamut of dreamy pop ballads to garage-rock dance parties with her Rickenbacker 4001 used here during “Undertow.”