Sidious

Sidious is a black metal band based in London, United Kingdom, formed in 2012. Initially emerging with a symphonic blackened death metal sound, the group has evolved through various stylistic shifts, eventually focusing on a more traditional black metal approach. Their discography includes several full-length albums, most notably the 2026 release Malefic Necropolis. Recorded at The Parlour Recording Studios, this work emphasizes a blend of classic black metal aggression with occasional death metal elements, characterized by precise instrumentation and a focus on raw, atmospheric intensity. The band’s current lineup features Isfeth on vocals, Indomitus on guitars, Baalrath on bass, and Valdr on drums.