30 Seconds To Mars, Arcade Fire Lead MTV's Musical March Madness

It's finally here. After 12 solid months of endless debate, speculation, open campaigning and a whole lot of accusatory e-mails from Tokio Hotel fans, at long last, we have reached the tip-off of MTV's 2011 Musical March Madness tournament. Get ready for a bit of band bracketology that pits the 64 acts that matter most in rock against one another, with ultimate glory (and a really nice