Jonah Rocks is a 5-year-old drummer you're clearly going to be hearing lots about in the future. The kid has surreal musical skills for someone so young. You can read more about him on his website, which has more videos of his covers along with recent news.
For now, check out his cover of "Toxicity," by System of a Down. He kills it.
Buzzfeed speculates that the Devil met him on the crossroads at the age of 2. We can believe it.