Most people sign up for tours at Colorado's Cave of the Winds, but if you're Grayson Erhard (formerly of Fort Collins), you bring your acoustic guitar and perform.
According to Free Beer, this is "the most Internet video of the Internet."
And that it is!
This failed contestant from NBC's "America's Got Talent" decided to show people exactly how not to rock.
This incorporates fire, cinder blocks and a little hardcore METAL...
Sometimes, musicians get really into their music.
This rocker is playing a gig with his sweet band mates. They seem to be a bit more chill than he is, but he is working his hairography as much as possible.
This guy may need to see a chiropractor with the way he is whipping his hair...