Tyler Joins Underwood at ACMs

VIRAL VIDEO OF THE DAY: Carrie Underwood and everyone’s favorite country crooner, American Idol judge Steven Tyler, perform a medley of “Undo It” and “Walk This Way” at last night’s ACM Awards show in Las Vegas. What’s next? A duet with Scotty McCreery? For more on last night’s awards, see accompanying story here. (4/4a)