Los Angeles: Two guitars used during Katy Perry's Super Bowl half-time performance have gone up for auction to raise money for charity.
The 'Roar' hitmaker performed at the big US football game in Arizona and some of the instruments used by her band have been donated to help anti-domestic abuse charity Break The Cycle.
"Guys! Want the guitars that my band will be playing at #Sb49? Bid now to benefit @BreaktheCycleDv," Perry wrote.
Bids for the 74 American Vintage Jazz bass and Fender American Standard Stratocaster guitars stood at around USD 800 each. The auction ends on February 15.