Westworld‘s is HBO‘s hottest show right now, so it was only a matter of time before Eric Calderone decided to make the theme song a little more metal. Eric’s YouTube channel exploded when his heavy metal covers of the Skyrim, Game Of Thrones and Star Wars themes went viral, and now he’s taken on the epic Westworld. Check out the guitar cover below, and for more information on the science fiction thriller, head to HBO.com now!

Here’s the original score by Ramin Djawadi: