Psycho is the thirteenth track on System of a Down's second album. The lyrics written by Serj Tankian and Daron Malakian, and the music was written by Shavo Odadjian and Malakian. The song is about negative sides of human's nature, and about how these sides can make people go crazy.
- While performming this song back in 2002, ending was slighlty extended. Solo was longer, after the normal part Serj changed keyboard samples to piano ones.