"There's always a first time when you discover a band, whether it's the Beatles or Taylor Swift," Def Leppard singer Joe Elliott said.

"So we Googled her and iTuned her and listened to it all and said 'Wow.'," he added glancing over at the 18-year-old Swift at a recent press conference.

The show, a popular series on CMT that pairs country artists with pop and rock acts, will air 9 p.m. EST Friday. - more on this story

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