During a visit to the Beethoven museum in Bonn, a young American student became fascinated by the piano on which Beethoven had composed some of his greatest works. She asked the museum guard if she could play a few bars on it; she accompanied the request with a lavish tip, and the guard agreed.
The girl went to the piano and tinkled out the opening of the Moonlight Sonata. As she was leaving she said to the guard, "I suppose all great pianists who come here want to play on that piano."
The guard shook his head. "Padarewski [the famed Polish pianist] was here a few years ago and he said he wasn't worthy to even touch it."