Songs about Psychosis?

[Butterfly]

I was just wondering, does anybody know really good, powerful songs about psychosis. My fiance would like to know as he is studying drama, and wants to do a private project about Psychosis.

 

[HawthornePassage]

http://www.youtube.com/watch?v=V3mywUc8ICs

how do you embed?

 

[HawthornePassage]

thats probably not what you want but i figured id post it anyway

try madhouse by anthrax thats not screaming

 

[UsedToBe]

Gotta Get Away by Offspring. Classic!