Hot off of their most recent Decibel cover appearance promoting their latest opus In Cauda Venenum, Swedish prog-metal masters Opeth have once again appeared to contribute to our extremely extreme publication. This time, they’ve come with an exclusive new song only available through the Decibel Flexi Series. Titled “Cirkelns Riktnin,” the entirely Swedish song continues the lyrical theme set on In Cauda Venenum. And while we at Decibel don’t habla any Swedish, we can certainly tell you that this is not a track to miss. Make sure you sign up for a deluxe Decibel subscription by Wednesday, September 4 at noon EST or you’ll be forced to bid farewell to this opportunity.