Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Ideal Trombone Sound

Young trombonists everywhere - in my opinion, this is how a trombone should sound. Mr. Alessi has the perfect sound, the sound that every serious trombonist aims for. Though the C.D. doesn't boast a variety of music (it's predominantly 20th century American), it is all fantastic music, the best of its kind. The last track is amazing, five of the greatest trombonists around, all playing together, it's outstanding. Serious trombone students, this is a good addition to your C.D. collection. This is the sound to aim for.