John Mayer Surprises Andy Cohen With a Diana Ross Cover - Watch Now!

John Mayer surprised his good friend Andy Cohen with a special performance!

The 40-year-old singer-songwriter surprised Andy on a special edition of Watch What Happens Live on Sunday night (June 3) in celebration of Andy‘s 50th birthday.

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During his appearance, John performed a cover of Diana Ross‘s “It’s My House.”

“I wanted to play a song that had some importance,” John said.

“I’m going to play a song I think that really sums up the moment, it’s by I think one of your very favorite artists: Diana Ross…in my own inimitable style.”

Watch below!