The Gears of Rock has several $20 iTunes Gift Vouchers, courtesy of the Energizer Forum, to give away to some lucky readers.

Here is a little bit about the give away and Energizer Forum: Most of you have heard of Pandora Radio, the site that lets you put together your own personalized music stations based on a particular artist, song, or genre. Well, Pandora has recently teamed up with Energizer batteries to offer the Energizer Forum, a message board where Pandora users can interact with other music fans to discuss artists, instruments, music video games, music gadgets, the future of music, and more.

The first three people to email me the correct answer to the following question will receive a $20 iTunes voucher:

Which legendary hard rock group played a special Christmas show on Broadway at the Nokia Theatre Times Square on December 5, 2008?

Email your responses to gearsofrock@gmail.com. The winners will be notified by email within 7 days.