Sinking its roots deep in the years as early as 2009. Taking a real form and name in 2013, the project of one man, Hyvermor, quickly recorded and released the all-acclaimed album "Monstres et Merveilles", already featuring participation of Aliunde. Short after, in sommer, Hyvermorwent with Lazareth and Aliunde to perform mountain recordings. Blending pure black metal shrieks, declamative vocals, middle-ages-inspired music, based on medieval history or fantastic themes, Grylle’s music is the proper atmosphere proper to thinking, practice alchemy or perform sorcery.
In 2019 the band releases the new album "Les Grandes Compagnies"