Genre: Rock
Samael is a heavy metal band formed in 1987 in Sion, Switzerland.
Although much of their music from the mid-1990s onwards has incorporated electronic sounds which would best define their genre as industrial metal, they are an early 2nd Wave black metal band and an innovator for post-black metal styles.
Samael released several demos, including an extremely rare demo titled Medieval Prophecy. Their first demos presented a slow, doomy style of thrash metal with raw vocals, similar to that of Celtic Frost. Some of the songs would be included on Worship Him (1991) and Blood Ritual (1992).
Source: http://en.wikipedia.org/wiki/Samael_%28band%29