Lady Gaga Does Surprise Performance Of 'Shallow' With U2 At Las Vegas Sphere

Lady Gaga sings a duet with music veteran Bono and band U2 in Las Vegas as she makes ANOTHER  surprise visit on to a rock stage

Lady Gaga Joins U2 on Stage at Las Vegas’ Sphere

Lady Gaga Joins U2 for ‘Shallow’ and Other Duets at Las Vegas’ Sphere