“In the past six months, System of a Down have doubled their album output: In May, the critically successful quartet delivered *Mezmerize*, an 11-song, 36-minute blast of hyper-aggressive riffing, breakneck rhythm shifts, and Middle Eastern accented melodies. Six months later, they're offering the second side of the album, *Hypnotize*, which is meant as a companion piece; *Mezmerize*'s "Soldier Sid”
