America's Got Talent Grand Finale Begins

Out of hundreds of acts, 48 were picked to do their thing in prime time. Out of those 48, only four remain.
As the season finale of America's Got Talent got underway tonight, the finalists performed one last time in hopes of securing enough love from the audience to be crowned America's Best New Act.
Oh yeah, and win $1 million and a headlining show in Las Vegas. No wonder it was such an emotional night...