"You look at the top of the rock chart, and you see all kinds of bands who have had Top 40 radio hits, from Staind and Foo Fighters and Blink-182, " he said.

CNN: 'Nevermind,' never again?

The latter album benefited from the fact that it was released the week of Record Store Day, an annual worldwide celebration of independently owned music stores marked by concerts, cookouts, parades and special releases like the Foo Fighters' vinyl-only covers album, Medium Rare.

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Foo Fighters and friends rock Central Park in record-setting charity gig.

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American rockers Foo Fighters closed T in the Park at Balado, near Kinross, after a show-stopping performance on Saturday from Beyonce.

BBC: T in the Park: Foo Fighters bring festival to a close