What happens when you take one of heavy metal’s most iconic, devil-horn-raising anthems and drop it straight into a Finnish backyard full of banjos, accordions, and reckless joy? You get Steve ‘n’ Seagulls performing an absolutely INSANE bluegrass-fueled cover of The Number of the Beast by Iron Maiden. Warning: metal purists may clutch their leather jackets… right before tapping their feet uncontrollably.

Check it out below!