There are multiple artists using this name: 1) A British progressive jazz-rock band of the Canterbury style in the 70s. 2) The incorrect English spelling of the Japanese rock band ギルガメッシュ (girugamesh). 3) A now defunct Dutch hardcore band. 4) A now defunct Australian ska/hardcore band. 5) A progressive rock/fusion band out of Petaluma, California. 6) An american progessive band. Their demo is still under production, however, some songs may be found at www.purevolume.com/gilgameshusa.