Alicia Keys appeared on "The Late Late Show with James Corden," where she entertained Corden and fans with a game of "Spill Your Guts or Fill Your Guts." Key, who was a former judge on “The Voice” was asked to rank her former co-stars singing voices or risk eating a mystery food. "Gwen Stefani is best," she says, then pauses to laugh. Corden then warns Alicia that either way she ranks her co-stars the game ends with a text message from one of them. "Gwen Stefani is best, Adam Levine is second and Blake Shelton is the worst,” says Alicia as she explains that Shelton was last because he didn’t have her phone number. So what question had Keys eating an ant-covered kool-ickle? What city is the worst city to tour in? Which judge do you think has the best voice on “The Voice?”