Growl of Clown Ulaanbaatar Growl of Clown (often abbreviated as G.O.C) is a Mongolian band formed in 2014 that releases deathcore, a sub-genre of extreme metal music. The band consists of 5 people and includes vocalist Khurelbaatar Battulga, drummer Altan-Erdene Erdenechimeg, solo guitarist Barkhuu Otgonbayar, bass guitarist Ariun-Erdene Ganbaatar and guitarist Nyamjav Jambaljav. Users who are followed by Growl of Clown Magnolian Dulguun Bayasgalan Ulaanbaatar