We finished our main courses just in time to join the throng gathered round Mr Friedmann who had decided to perform his pièce de résistance, a rendition of 'Edelweiss' played entirely on a set of cowbells. After summoning two buxom blondes from the crowd to serve as his accomplices, he began his performance which, given the circumstances, was really rather good. Then again, since he's been doing this party trick six nights a week for 38 years, you'd expect it to be quite polished by now.