Moscow's Sanctus Foedus explore progressive metal from the Russian capital since 2015. Their Latin name meaning "holy covenant" channels sacred agreements into technically ambitious compositions.

Sandalinas craft melodic progressive metal from Barcelona, building intricate compositions from one of Spain's most culturally vibrant cities. Their Mediterranean base infuses their progressive ambitions with warm, passionate energy.

Perm's Sander-P explore progressive metal from the Ural city since 2016. Their personal-name-derived identity channels individual creative vision into compositions from the western edge of the Ural Mountains.

Sangham craft progressive metal from Marseille, building intricate compositions from the Mediterranean port. Formed in 2020, they bring Provencal ambition to the French progressive scene.

Yaroslavl's Santerno explore progressive metal from the ancient Golden Ring city since 2009. Over fifteen years from one of Russia's most historically significant cities, they have built a catalog of technically sophisticated compositions.

Santtu Niemela creates power and progressive metal from the southwestern Finnish towns of Marttila and Loimaa, building ambitious compositions as a solo project. Formed in 2023, his work brings personal prog-power vision to the Varsinais-Suomi region.

Sapiska craft progressive metal from Helsinki, building intricate compositions from the Finnish capital. Active since 2012, they bring cerebral ambition to the Helsinki progressive scene.

Sargassus craft progressive post-metal from Tampere, building expansive compositions inspired by the seaweed-choked Sargasso Sea. Formed in 2020, they bring oceanic depth and progressive ambition to the Finnish post-metal scene.

Formed in Salzburg in 1990, Scaffold played progressive thrash/heavy metal in the technical vein, drawing comparisons to acts like Toxik and Osiris, and released a demo titled "Your Chance Is Black" in 1991. They represent the progressive end of Austria's early-1990s thrash underground, blending full-fledged prog arrangements with thrashing aggression before disbanding.