This film has not been released in the U.S., so I can only repeat what I’ve read about it. This “high-minded documentary” from Robert Cibis and Lilian Franck helps us to understand a rarefied world, whose likable central figure is presented with charm and humor. Stefan Knüpfer is a piano tuner working for Steinway, and his assignments are the pianos of soloists preparing for concerts or recordings.
From what I’ve read, the film depicts Knüpfer as more than a tuner: more like a creative collaborator who engages in-depth discussions with pianists about tone and timbre and then gives them what they want. From what I can tell from the trailer, Knüpfer is an engaging personality, and I’m sure this is an excellent film.