(NEW YORK) -- In May, Lady Gaga performed at a benefit for the Robin Hood Foundation, which fights poverty in New York City.
Now, she's auctioning off the piano she played at that event for a very special cause.
The Steinway Baby Grand piano, which is personally autographed by Gaga and has an estimated value of $60,000, is up for grabs at CharityBuzz.com. All proceeds will go to Ten O'Clock Classics, which provides private music lessons and instruments free of charge to New York City schoolkids, and also encourages kids to study classical music.
In 2009, Billy Joel auctioned off one of his pianos to benefit the same organization.
The auction closes June 15. As of early Friday morning, bidding on Gaga's piano had reached $27,505.
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