System Of A Down - B.Y.O.B. - piano cover
From the wikipedia: "B.Y.O.B." ("Bring Your Own Bombs") is the first single released from American heavy metal band System of a Down's fourth album Mezmerize. Like their earlier song "Boom!", it was written in protest against the Iraq War. B.Y.O.B. means "Bring Your Own Bombs", as opposed to the common interpretation "Bring Your Own Booze", referring to the Iraq War as a party for the United States. It is also a playable track in the music video game Guitar Hero: World Tour, and a downloadable track in the Rock Band series." Quite a crazy song to cover, I hope it worked.