System Of A Down, Volbeat, The Sounds, Avenged Sevenfold, Pendulum, The Qemists, Social Distortion, DJ Shadow, Wolfmother. Provinssirock has been going since 1979 and is now Finland's largest rock festival, attracting the likes of Armenian-American eerie hardcore metallers SOAD, big rock riffage from Copenhagen's Metallica-adoring quartet Volbeat and California's hugely popular pop-punk/metal hybrids AS to its stages.