Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Solid biography

I think the Alan Walker series has become the definitive biographical work on Liszt. Walker does not reach any staggering new insights about the man's character, but he is a stickler for accurate evidential detail (witness his exhaustive exploration of the infamous but apocryphal "Beethoven kiss"), and provides a great number of intriguing anecdotes that help the history to come alive. If Walker seems a bit enamored of his subject, he can hardly be blamed -- it is, after all, a weakness common to all biographers, and in this case doubly so: Liszt really seems to have been about the nicest man in the history of classical music.One should not look here for an in-depth critique of Liszt's merits as a composer, but for straight biography, Walker's work is unimpeachable.