E' davvero pedante come si dice?
http://www.amazon.it/Companion-Beethovens-Pianoforte-Sonatas-Analysis/dp/1860960863/ref=sr_1_2?s=english-books&ie=UTF8&qid=1349728639&sr=1-2
A Companion to Beethoven's Pianoforte Sonatas: Analysis
Sir Donald Francis Tovey