They're teasing him before the sacrifice.

I've found metal heads to be, on the whole, much better people than hip-hop/rap fans. I think it's the collective force of the music rather than the narcissism inherent in hip-hop/rap. If this was a rap concert, there would be 9 people talking shit at him, 12 waiting to beat him up, and 42 pulling out their iPhones to "get that shit on YouTube" when the second group finally starts.

I've worked in a concert hall for almost eight years, and the metal heads are some of the most peaceful, level-headed concert goers ever. The worst crowds are for reggae, rap and hiphop. Punks are on the fence.