Instruct: Classify an Amazon review as either positive or negative.
Query: A profoundly beautiful documentary, but rather short-measured.

I agree with the other reviewer that this documentary filmed in 2002 could have been much better if the musical excerpts could be elaborated.I have nothing to add to the very learned and detailed reviews by the two earlier reviewers, but would like to add that there appears to be another documentary available now on Youtube that is in Italian (without subtitles) that could supplement this film - the Italian title of that documentary escapes me, but the contents of that focused on the pianist Maurizio Pollini, and quite an extended portion of that documentary covers the close collaboration and friendship between Pollini and Nono.Wish that documentary could be published with subtitles, too.