Robert Downey Jr. Was Nervous When He Went On Stage But When He Opens His Mouth? Unbelievable!

#1

When you're as beloved and well-known as Gordon Sumner, otherwise known as Sting, your 60th birthday party tends to be a pretty big deal. So, in 2011, while he was performing at his own party, he asked a number of guests to join him, from Bruce Springsteen to Lady Gaga.

#2

But it was none other than Iron Man himself, Robert Downey, Jr., who turned in the most surprising performance of the night.

#3

Just wait until he joins Sting on stage and grabs the mic for himself. Really, it's that good!

#4

Who knew Tony Stark was such a multi-threat! I guess some people really do get all of the talent.

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