Perm's Soldis deliver experimental melodic death metal from the Ural city since 2015. Their enigmatic name and origins at the gateway to the Urals channel creative ambition into compositions that push melodic death metal's boundaries.

Solefald is a Norwegian avant-garde metal duo formed in 1995 by multi-instrumentalist Lars Are 'Lazare' Nedland and vocalist-guitarist Cornelius Jakhelln, who named the project after an Old Norse word for 'sunset.' The band's first album The Linear Scaffold laid out their framework of black metal fused with experimental and literary influences, while Pills Against the Ageless Ills (2001) — a concept album about a pornographer and a monk — demonstrated the absurdist conceptual ambition that would define subsequent records. In Harmonia Universali (2003) featured lyrics in four languages, each song dedicated to a different historical figure or deity. Solefald have rarely performed live, preferring to exist primarily as a recording project.

Soleilnoir ("Black Sun" in French) craft progressive metal from Frankfurt, building intricate compositions from the Hessian financial capital. Active since 2012, their French-language name adds a Continental elegance to their cerebral approach.

Solemn Silence practice progressive melodic death metal from the Hessian university city of Marburg, combining technical ambition with the emotional weight of melodeath. Formed in 2023, they bring intellectual depth to the melodic extreme metal tradition.

Solhverv (Danish for "Solstice") channel black metal from Copenhagen, marking the turning points between light and darkness through their atmospheric compositions. Active since 2015, they bring seasonal intensity to the Danish capital's vibrant black metal scene.

Petrozavodsk's Soli Diaboli Gloria have been practicing black metal from the Karelian capital since 2009. Their Latin dedication meaning "glory to the devil alone" channels infernal devotion into over a decade of compositions from the shores of Lake Onega.

Death metal/hardcore crossover band from Roeselare in West Flanders, active since 2017. Their fusion of death metal's technical extremity with hardcore's raw intensity creates a punishing sound from one of Flanders' mid-sized industrial cities.

Soliloque practice black metal from Barcelona, channeling the genre's atmospheric solitude through their Catalan-inflected compositions. Active since 2017, they bring introspective darkness to the Mediterranean black metal scene.

Stockholm's Soliloquium have been crafting melodic doom/death metal from the Swedish capital since 2012. Named for the act of speaking one's thoughts aloud while alone, over a decade of introspective compositions have made them one of Sweden's most thoughtful doom/death projects.