Sleep Token are a London, England rock collective. The members of Sleep Token are a masked, anonymous collective of musicians said to be united in their worship of an ancient deity identified as 'Sleep', who appeared to the band's lead singer, 'Vessel', in a dream. Sleep Token's style has been described as alternative, post-metal, ambient, progressive metal and electronic, among other genres. “Our identities are unimportant," Sleep Token leader Vessel told Metal Hammer a few years back. "Music is marketed on who is or isn’t in a band; it’s pushed. prodded and moulded into something it isn’t. Vessel endeavours to keep the focus on His offerings.” The group worship Sleep it seems. Sleep is the name of the divine entity that the band follow, "...since no modern tongue can properly express its name," label Basick Records' site reads. "This being once held great power, bestowing ancient civilisations with the gift of dreams, and the curse of nightmares."