Finnish folk-metal ensemble Korpiklaani’s sound is governed by the marriage of fat, compressed, electric guitar power riffs, charging accordion, and fiddle underscored by thrumming basslines and whomping, double-timed drums often played in sped-up march rhythms. The effect is at once martial and drunken, always celebratory, and often with traditional yoik vocals. Though their first three albums — beginning with 2003’s Spirit of the Forest — employed English lyrics and death metal frameworks; by the time they issued their fourth, 2007’s Tervaskanto, they’d shifted to all-Finnish lyrics, and their folk-metal roots gradually claimed the foreground. By 2015’s Noita and subsequent efforts like Kulkija (2018) and Jylhä (2021), folk-metal had become both the root and the branch, resulting in gigs — even those played in the U.S. and Asia — that came off as hedonistic celebrations of Finnish tradition, expert musicianship, and folklore.