Entrepreneur Joe Francis kicked off the bidding with USD 10,000, but New York Giants owner Steve Tisch won the war by giving USD 32,000 for the music instrument.
As a bonus, th 27-year-old singer promised to take the winning bidder to gay bar, The Abbey, reported Ace Showbiz.
The former wife of Russell Brand later took the stage to wrap up the fundraiser by singing her songs 'Wide Awake' & 'Firework' and covering Bonnie Raitt's 'I Can't Make You Love Me'.
Perry wore a taupe, rose and ivory off-shoulder gown with a crystal belt. The pop star also posed with other celebrity guests including actress Kate Hudson.
Other attendees included Sarah Jessica Parker, Alessandra Ambrosio, Rumer Willis, Kristin Davis, Mark Salling, Octavia Spencer and Rose McGowan.
The benefit event was hosted by Chelsea Handler and raised more than USD 1.3 million.
