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.
1 Often, goth music refers to a particular style of rock music from the 80's, featuring a heavy use of synthesizers, jangly guitar, reverb, and monotone vocals.To describe music as gothic is to refer to the tone, attitude, and the lyrical content.inally, remember to check out other dark music genres. You have gothic rock, but there is also dark ambient, death-rock, post-punk (always good to listen to the roots of the genre you claim to be part of), dark wave, neoclassical and not forgetting, gothic metal.