Born of Osiris

Born of Osiris is a cornerstone of the 'Sumeriancore' movement, a subgenre of progressive deathcore that emerged in the late 2000s characterized by high production values, technical proficiency, and the integration of synthesizers. Formed in 2003 in the Chicago suburbs, the band evolved from a standard metalcore outfit into a complex, polyrhythmic entity.

Their sound identity is built on the interplay between Cameron Losch's intricate drumming and dual-guitar harmonies that frequently utilize seven-string guitars for extended low-end range. A defining characteristic is their use of keyboards to provide both atmospheric pads and lead melodies that mirror the guitar work. Historically, they were pivotal in bridging the gap between the raw intensity of deathcore and the cerebral complexity of djent and progressive metal. Despite numerous lineup changes, they have maintained a consistent reputation for 'clean' technicality, influencing a generation of bands to prioritize clarity and synth-integration in heavy music. Critical consensus often highlights 'The Discovery' (2011) as a high-water mark for the genre, praised for its ambitious composition and the brief but impactful inclusion of guitarist Jason Richardson.