I love stories like this! Last year there was this viral video, you may remember it, of a subway singer singing The Righteous Brothers' "Unchained Melody." The video went insanely viral because he got down on that song! His voice, plus the acoustics of the subway, just blew you away. Here's that performance.
Fast forward to now and he just got a standing ovation on 'America's Got Talent'! Even though Mel B and Heidi Klum were on the fence, he's on his way through to the next round. Let's go Mike!