Last night, Usher performed his brand new single 'Good Kisser' for the first time on Monday’s episode of 'The Voice.' There was a whole lot of sweat, dancing and sexual chemistry with the female dancers. Although his vocals faltered towards the end (tiredness), kudos to him for singing it live. His fellow 'Voice' coaches Shakira, Adam Levine, and Blake Shelton looked on, probably wishing they too had some of that very same stage charm!