Musical Collaborators With Crazy Huge Age Gaps

Eminem and Rihanna

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Justin Bieber and Usher

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Paul McCartney and Michael Jackson

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Bono and Alicia Keys

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Snoop Dogg and Miley Cyrus

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Aretha Franklin and George Michael composite

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Bone Thugs-n-Harmony and Phil Collins composite

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Taylor Swift and Tim McGraw

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Madonna and Britney Spears

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Elton John and Mary J. Blige

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Frank and Nancy Sinatra

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Ronald Isley and R. Kelly composite

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Carlos Santana and Michelle Branch composite

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Loretta Lynn and Jack White

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Tony Bennett and Lady Gaga "Cheek To Cheek" Taping - Red Carpet

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Lady Gaga and Tony Bennett have been making the media rounds promoting Cheek To Cheek, the joint jazz LP they're dropping in September. While it's clear the singers come from different eras in popular music, just precisely how big is the age difference between the two stars?

Well, if you really want to know how many years there are between the pop diva and the classic crooner, you'll have to hop into the gallery above. You can also discover how the pair stacks up against other musical collaborators who've bridged age gaps of 15 years or more. We've got artists like Elton John and Mary J. Blige, who obviously have a few decades between them, and acts like Eminem and Rihanna, who we didn't realize spanned so many years.

Take a peek inside to find out who else made the list.

[Photo Credit: Getty Images]