Ozzie kicks off Ozzfest

Ozzfest has kicked off in Massachusetts.

MTV says Ozzy Osbourne asked the crowd if they were ready to go crazy. In addition to Osbourne's Black Sabbath, headliners include Iron Maiden, with original members performing for the first time in years. Other performers were Zombie, Killswitch Engage, Shadows Fall, Mastodon, and Bury Your Dead.