Sleep

is an American stoner metal band formed in 1991, known for their heavy, sludgy sound that blends doom metal and psychedelic rock. With classic albums like 'Dopesmoker' and 'Sleep's Holy Mountain', Sleep is considered one of the pioneers of the genre, influencing countless bands with their slow, monolithic riffs and hypnotic atmosphere. Their music is marked by deep, powerful grooves and a sense of transcendence.