The West Coast has been buzzing about Dierks Bentley's pre-Grammy show at the legendary Troubadour in West Hollywood. Garrett Hedlund from Country Strong performed, as did Paramore's Hayley Williams, Lady Antebellum and Del McCoury. Miranda Lambert and Zac Brown stepped on stage to provide harmonies on "Bad Angel," but the most hilarious exchange came when Blake Shelton serenaded Dierks with his new single "Who Are You When I'm Not Looking."
