Instruct: Classify a given review into positive or negative sentiment.
Query: Beautiful but not tier 1 concertos

I own all 66 piano and violin concertos in this series. This like all of them are worth owning. To the untrained ear I cannot really distinguish one from another. Are they hidden treasures? I think a few. None of them are mediocre....they just are not as memorable as Beethoven, Rachmaninoff, Grieg, or Brahms.