Pianomania

Pianomania is a 2009 GermanAustrian documentary film by directors Lilian Franck and Robert Cibis. The film presents Stefan Knpfer, a virtuoso piano tuner from the piano company Steinway amp Sons, in his work with pianists such as Lang Lang, Alfred Brendel and PierreLaurent Aimard.

Knpfer wants to study instruments from the time of Bach for Aimard. He experiments with sound absorbers made from felt and with glass sound mirrors. But as fate will have it, the number 109 grand piano is sold to Australia a few months later and that is not the last obstacle that gets in their way. Knpfer and Aimard meet regularly, and when the tension is so thick it can be cut with a knife, Knpfer saves the day with his sense of humour. The road toward the pianists longed for bravo is long.One afternoon, a rather sleepy artist in jeans and sneakers shows up. It is the Chinese star pianist Lang Lang, who will be giving a guest performance in the Viennese concert hall. Still suffering from jet lag, he has to choose an instrument to play. His overcrowded tour calendar leaves little time for individual settings. Instead, and almost shyly, he asks for a heavy bench that will hold up through his extrovert style of playing without sliding around. The piano superstar completes his performance in the large hall in a dark suit and wild hairstyle. The bench holds up, and he receives thunderous applause. ........

Source: Wikipedia