Sylff explores progressive and post-black metal from Arras in northern France, active since 2018. Their compositions weave atmospheric expansiveness into black metal's harsh framework, creating a sound that breathes with emotional depth.

Symakya plays symphonic and progressive metal from Nancy in Lorraine, active since 2011. Their ambitious compositions layer orchestral arrangements and complex structures over heavy guitar foundations, reflecting over a decade of creative refinement.

Synaesthetics explore progressive metal from Brno, channeling the sensory cross-wiring their name describes into compositions that blend textures and dynamics in unexpected ways. Their approach to the genre emphasizes the experiential and perceptual dimensions of heavy music.

Synchronic channel progressive death/thrash metal from Frankfurt, building technically demanding compositions that balance cerebral ambition with aggressive energy. Active since 2008, they represent the sophisticated end of the Hessian extreme metal spectrum.

Synchronical create progressive metal from Madrid, building intricate, time-synced compositions from the Spanish capital. Active since 2015, they bring mathematical precision to the Iberian progressive metal landscape.

Gothenburg's Syndr pair progressive groove and death metal from Sweden's metal capital since 2024. Their Old Norse name meaning "sin" channels ancient Scandinavian transgression into freshly-minted compositions of rhythmically ambitious extremity.

Syndrome craft progressive metal from Vantaa, building intricate compositions that diagnose and explore complex musical themes. Active since 2013, they bring clinical precision to the Finnish capital region's progressive scene.

Syndrone push progressive metal and shred from Basel, showcasing virtuosic guitar work and complex arrangements that prioritize technical mastery. Their instrumentally driven sound channels the ambitious spirit of progressive metal's most dexterous practitioners.

Sypherion craft progressive symphonic metal from Barcelona, building elaborate, orchestral compositions from the Catalan capital. Active since 2016, they bring coded grandeur to the Mediterranean progressive scene.