Well if these aren't just the coolest kids on the planet. Absolutely shredding Slayer and cheesing for the camera while doing it. Come to find out they have an entire channel where they're just kicking ass and taking names.
From their Youtube Channel: Welcome to our channel! This is where we (Audrey and Kate) do fun things. We play guitar and bass on and off ROCKSMITH, do some covers here and there and share our ART project. Oh, and Kate sensei teaches lots of important things. Hope you enjoy!
Give the parents of these girls a medal or something. I'd love to see these girls face off against these other "youtube celebrities" and put them in a metaphorical body bag. Here's some more of their stuff: