In 2011, interesting pictures of a goat at an extreme metal concert were released on the internet. That was a D.I.Y show of Wormrot, on a farm in Mauriac, France. The unexpected observer, a goat named Biquette, seemed totally focused on the show, surrounded by other human onlookers. You can watch a video of that show and many images.
Sadly, in 2014, Biquette passed away, as confirmed by Flo - the owner of the farm.