System of a Down got "it" out of their system in 2005, unleashing double album Mesmerize/Hypnotize six months apart to plenty of fanfare. So it's understandable that the lads need a little time off from one another. Hence, whirling dervish frontman Tankian going solo. Expect diversity: SOAD and the "new" Guns N' Roses drummer pitch in, as well as an opera singer. Plus, what's not to love about an album whose penultimate song is called "Beethoven's C*nt"?