Keith Urban was a special guest on "The Tonight Show Starring Jimmy Fallon" on Friday night, where he performed some songs that are definitely NOT on his new album...

Jimmy Fallon and Keith Urban have teamed up to form a new country duo called "FML" (if you don't know what 'FML' means, think a word that starts with 'f' and then finish it off with 'my life'). Basically, the two of them got out some instruments, took posts from THIS website, and turned them into works of art. Check out the hilarious video:

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