CHICAGO (CBS/AP) -- Paul McCartney, Metallica and Sam Smith will be among 130 acts at this year's Lollapalooza music festival in Chicago.
Lollapalooza founder Perry Farrell said Florence + the Machine, Bassnectar and The Weeknd are also on the lineup.
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Farrell says "young talented artists will be performing alongside legends."
McCartney will be making his first appearance at Lollapalooza, while Metallica is taking a stage for the first time since 1996.
Others performing include Kaskade, Alesso, NERO, Dillon Francis, Carnage, Nicky Romero and DJ Snake.
Farrell says the lineup contains "fresh faces," including MisterWives, Ryn Weaver, Catfish and Bottlemen.
The festival, taking place July 31 to Aug. 2, marks its 11-year anniversary in Chicago's Grant Park.
Festival officials say three-day general admission tickets sold out within an hour. Single-day general admission tickets remain.
Paul McCartney can sell out any enormous stadium in minutes by himself. So why would the 72-year-old legend play Lollapalooza, sharing a bill with dozens of other bands older fans have never heard of?
It's simple when you talked to Danny, Kevin and Emmanuel -- three 19 year olds, who all told CBS 2's Jim Williams that they don't really listen to McCartney.
McCartney, savvy as them come, surely knows that and he is still driven to conquer new audiences, says Lin Brehmer of WXRT Radio.
"For Paul McCartney -- he's playing in front of 100,000 people, maybe 20,000 of whom have never seen him or heard him," Brehmer said. "Think what it took for Paul McCartney in the Beatles to get where they got. This is a guy who's been competitive from the start."
And so McCartney performs today with the likes of Kanye West and Rihanna.
"He likes the idea of appealing to all the generations," Brehmer said.
The great ones rarely lose that drive and Danny, Kevin and Emmanuel believer McCartney will find an enthusiastic young crowd at Lollapalooza.
"I think a lot of kids my age may not listen to him much but a lot of people can definitely appreciate his music and what he's done for the industry, and I think it might be a good move on his part," said Emmanuel Roldan.
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