Who is Jon Brion?

When Tom Petty needed someone to do string arrangements on his latest album, "The Last DJ," and conduct an orchestra at a handful of concerts, he sought out Brion.

"The Paul Thomas Anderson movies got me to check him out, because those are my favorite contemporary movie scores," Petty says. "We met a few years ago, and I thought he'd be good for achieving the kind of cinematic feel I wanted for this record, and he was."

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