Watch the 'Voice' Judges Do Some Impromptu Karaoke With Jimmy Fallon

Trae Patton/NBC
Blake Shelton, Pharrell Williams, Gwen Stefani and Adam Levine during a "Blind Auditions" episode of "The Voice." 

Jimmy Fallon turned the tables on the judges of The Voice during last night's episode of The Tonight Show (Oct. 26) -- instead of having them put aspiring stars on the spot, he made Blake Shelton, Gwen Stefani, Adam Levine, and Pharrell do a little impromptu karaoke (backed, of course, by the Roots).

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In a new game called "Spin The Microphone," Fallon had a number of (fairly silly) suggestions on cards, and whoever the microphone landed on got to choose who sang them. The result? Blake Shelton singing "YMCA," Pharrell convincingly rapping "It Takes Two," and Gwen Stefani putting a husky spin on "Hotline Bling -- watch the full clip below to see the judges get a small dose of their own medicine.