Silence of the Abyss brings progressive death/groove metal from Bastia, the principal city of northern Corsica, active since 2018. Operating from this Mediterranean island gives their heavy sound an uncommon geographic origin within European extreme metal.

Silent Circus combine metalcore with groove metal from Neuenhof, delivering pit-ready breakdowns alongside heavy, rhythmic riffing. Their Swiss approach to the modern heavy music crossover favors intensity and rhythmic impact.

Nantes-based Silent Seas has been exploring the intersection of technical, progressive, and groove metal since 2019. Their compositions navigate complex rhythmic terrain while maintaining the visceral impact of heavy grooves and dynamic shifts.

Silicium blends thrash metal, groove metal, and metalcore from Bordeaux, having formed in 2024. Their multifaceted approach to heavy music reflects the stylistic cross-pollination that defines the current generation of French metal bands.

Tyrolean thrash metal outfit formed in 2013 in Landeck, Silius draws from the legacy of Metallica, Exodus, and Pantera across multiple albums including "Hell Awakening" and "Worship to Extinction." Their fast-paced riffs and unrelenting energy have made them a prominent force in Austrian thrash.

Silverwave blend groove metal with metalcore from Madrid, combining rhythmic heaviness with modern breakdowns and melodic hooks. Formed in 2019, they bring shimmering aggression to the Spanish capital's heavy scene.

Sin Control deliver groove and thrash metal from the Castilian city of Zamora, combining rhythmic punch with thrash velocity. Active since 2015, they bring uncontrolled aggression to the northwestern Castilian underground.

Sinergia channel groove metal from Barcelona, building rhythmic, headbang-inducing compositions from the Catalan capital. Active since 2017, they bring synergistic heaviness to the Mediterranean scene.

SinKing deliver groove metal from the southern Finnish town of Turenki, channeling rhythmic heaviness as they sink into heavy grooves. Formed in 2020, they bring sin-laden rhythmic power to the Kanta-Hame scene.