Instruct: Classify Amazon reviews into positive or negative sentiment
Query: superb 20th century music

Tippett is a 20th century composer who wrote scores which are angular, prickly, idiosyncratic. The first symphony contains a multitude of musical ideas and bristles with wonderful clear counterpoint. If there is a weakness to it, that would be the second movement, which is a set of variations on a ground bass, and I never seem to know where it is going. About the piano concerto, I have no reservations. The first movement is a prolonged, poetic rhapsody on a group of related musical themes. In the second movement the piano plays restless figuration as melodies slowly unfold in the wind instruments, until the process is interrupted by a bright string theme. The final movement is a lively rondo in which the orchestra develop contrasting themes. Lots of wonderful melodies and sonorities.The audio engineering is superb here, and conductor, orchestra and soloist perform brilliantly