指尖飞舞，音符翩然。写得很细的doi文

　　Pianomania follows Stefan Knüpfer, a piano tuner from Steinway and his famous clients Lang Lang, Brendel, Buchbinder and Pierre-Laurent Aimard as they search for the perfect pitch. Truly an unusual and entertaining peak behind the curtain at the worlds great concert halls. 　　Written by Cibis & Franck 　　from IMDB