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.
a type of guitar-based music developed from emocore but having a softer, pop or mainstream sound. 2. a fan of emo, especially a person who is overly sensitive and full of angst or adopts a certain style characterized by dyed black hair, tight t-shirts and jeans, etc.