At Prosthetic Records' South By Southwest (SXSW) showcase at Club Mohawk in Austin, Texas this Wednesdau (March 17th), one attendee will win an Epiphone Prophecy Les Paul EX guitar signed by the groups who will perform throughout the evening.

In the meantime, a second signed Epiphone guitar - a Prophecy Futura Custom EX, to be exact - has been posted for auction on eBay, with all proceeds benefitting the T.J. Martell Foundation, a non-profit organization that supports research for cancer, AIDS and leukemia.

The T.J. Martell Foundation was suggested to the label by none other than RONNIE JAMES DIO. Like all metal fans around the world, Prosthetic was saddened to learn of Dio's diagnosis with stomach cancer late last year, so the label recently contacted the legendary singer's management to ask for a charity recommendation. Prosthetic was subsequently told that the T.J. Martell Foundation - a 501(c)3 non-profit founded in the 1970s - helped Dio receive key treatment in his ongoing battle against cancer. More information on the organization can be found at tjmartellfoundation.org.

Interested parties can bid on the auction or learn more about the guitar at this location.

Prosthetic's SXSW showcase at Mohawk (912 Red River Street, Austin,Texas) will be headlined by the Houston-based progressive instrumentalists SCALE THE SUMMIT and also feature sets by LANDMINE MARATHON, WITHERED, BOOK OF BLACK EARTH, THE FUNERAL PYRE and the label's newest signing, CLINGING TO THE TREES OF A FORST FIRE.

Special guests (and Austin's own) LIONS OF TSAVO will kick off the festivities at 7:20 PM. The all-ages event is free to anyone with a SXSW badge or wristband; for everyone else, a limited number of $15 tickets will be sold at the door.