Kill The Lights formed in 2019 as a Welsh-American heavy metal and metalcore group led by musicians with deep histories in modern heavy music. Former Bullet for My Valentine drummer Michael "Moose" Thomas began the project after wanting to return to a heavier, more organic style, bringing together players connected to bands including Throw The Fight, Still Remains, Threat Signal, Glamour of the Kill, and later Bullet for My Valentine bassist Jason James. The band debuted with "The Faceless," introducing a sound built on sharp riffing, double-kick drive, melodic choruses, and a clear affection for mid-2000s metalcore and classic heavy metal. Their first album, The Sinner, arrived in 2020 and established the group's mix of aggression and accessible hooks. Death Melodies followed in 2024, expanding the guitar work, vocal range, and darker melodic atmosphere. Kill The Lights stands apart through experienced musicianship: the songs are compact and hook-conscious, but the arrangements keep a strong metal focus through fast leads, breakdowns, and muscular rhythm-section work.