Types of Insomnia. There are two types of insomnia: primary insomnia and secondary insomnia. 1  Primary insomnia: Primary insomnia means that a person is having sleep problems that are not directly associated with any other health condition or problem.
System of a Down's music has variously been termed alternative metal, nu metal, hard rock, progressive metal, thrash metal, art rock and avant-garde metal.
Gwar. Gwar is a satirical heavy metal band formed in Richmond, Virginia in 1984. The band is well known for its elaborate science fiction/horror film inspired costumes, obscene lyrics and graphic stage performances, which feature humorous enactments of politically and morally taboo themes.