There's something about the act of playing guitar that makes white people -- as famously portrayed in this Chapelle Show sketch -- act a fool. In that spirit, we present to you many, many faces of John Mayer during his concert last night at Red Rocks Amphitheatre. All photos by Brian Landis Folkins. (See a full John Mayer at Red Rocks slideshow.) Which is your favorite Mayer Face?

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