Today (Saturday, December 1st) at 2:00pm PST, Julien's Auction House in Beverly Hills, CA will be auctioning over 80 guitars with proceeds going to the RONNIE JAMES DIO Stand Up And Shout Cancer Fund. Guitars have been donated to the cause by SLAYER, DEF LEPPARD, CARLOS SANTANA, EDDIE VAN HALEN, STEVE VAI, BRIAN MAY, AEROSMITH and many more.

DREAM THEATER have donated a metallic orange Ernie Ball Music Man John Petrucci Signature electric guitar, signed by the band members John Myung, James LaBrie, Jordan Rudess, and John Petrucci, who has additionally inscribed "Dream Theater 10-20-2010."

Check out the auction here.

Dream Theater recently wrapped up their world tour for A Dramatic Turn Of Events. Frontman James LaBrie checked in with the following recap:

"14 months later and its a wrap. Can't help but think how true the following words describe who and what we were becoming, but against all odds, admirably managed to transcend...

'Divided we falter, united we conquer.'

ADTOE was incredibly rewarding as a band, individually and last and definitely not least musically. On tour we all upped our game and the band was better than ever. The band was more powerful, tight, soulful and spiritually renewed. I personally was reminded of who I once was as a singer and why I dreamt of doing this as a kid. The entire band each and every night displayed conviction and confidence that was palpable. The synergy and camaraderie was unprecedented and the fans worldwide were always eager to comment with such positive praise. The unyielding support and faith from the fans has never been taken for granted. No words truly describe how grateful and honoured we are to be recipients of such fortune and benevolence."