Gwen Stefani and Blake Shelton, two judges on the forthcoming season of The Voice, joined Jimmy Fallon for a lip-sync battle on Wednesday night’s Tonight Show. Shelton’s first tune, “Puttin’ on the Ritz” by Taco featured his signature quiet cockiness, and his second tune Starship’s “Nothing’s Gonna Stop Us Now” somehow required an introductory throat-clearing. Stefani, on the other hand, brought us back to her high-energy No Doubt days with Carly Rae Jepsen’s “Call Me Maybe” and found a way to incorporate grinding on Fallon.