Justin Bieber Shocks Viewers on America’s Got Talent [VIDEO]

Justin Bieber performed his new single 'As Long as Your Love Me' on the season finale of America's Got Talent, and is it just me, or did he sound a little (OK, A LOT) off-key during his duet with Big Sean?

I guess it doesn't matter because teenage fans were screaming at the top of their lungs throughout his performance. Plus, I don't think his dance moves and a little striptease action hurt him, either.

Here's a video of the performance from last week - How do you think he sounds?