Justin Bieber is gonna have to do a lot more than say he's sorry to get out of this one!
Yikes! This could get ugly.
Take a listen to both songs (below) to hear the very recognizable riff!
But we're getting most of our material from perfectly placed backstage cameras that were live-streaming celeb action — before, during, and after the big show!
Hopefully Will got the coveted invite to Amy's secret Emmy after party, because these two seem like great pals!
Ch-ch-check out pics (below) of the former couple together backstage!