The line between the music world and the acting world has never been more invisible.

Reese Witherspoon is no stranger to showing off her vocal skills, after winning the Oscar for Best Actress for her portrayal of June Carter Cash in 2005's Walk the Line. This time, she's gunning for the Billboard charts!

Canadian crooner Michael Buble confirmed he will be working on a duet with Reese for his upcoming album next year. "By all accounts it would be true," he said. "I just really am a big fan, and so myself and my camp, we wanted to do this with her, and we were thrilled that she was excited about it too."

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Reese isn't the only actor to get the music bug, though. Johnny Depp brought the crowd to its feet at Aerosmith's recent concert in LA, joining the band on guitar for two songs, Stop Messin' Around and Come Together. It isn't the first time he's rocked out with the band -- they performed together at the Hollywood Bowl earlier this year -- but in light of this and a recent performance with Ke$ha, we can't help but wonder if Johnny has some larger musical aspirations on his mind.

What do you think of Reese and Johnny getting into the music world?

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