Instruct: Classify the given Amazon review as either positive or negative.
Query: Great performances of very good music.

Leo Delibes had a special talent for writing captivating ballet music. Tchaikovsky, the greatest ballet composer of all, was an ardent admirer of Delibes' ballets. While Coppelia is Delibes' masterpiece, both Sylvia and La Source are worthy compositions. You will never hear these works performed better than in these recordings by Richard Bonynge -- THE oustanding conductor of 19th century stage and programmatic music. This set is both a bargain and a treat.