Instruct: Classify a given Amazon review as either positive or negative.
Query: Great intro to Penderecki

Unlike his immensely dissonant works like the "Threnody for the Victims of Hiroshima" this work is quite pleasant and melodic. It is not however to be confused with easy listening. The work isn't accessible per se, but it certainly isn't unaccessible either. Let's just say that it is a splendid piece of music that will require a little effort on the listener's part, but hey, anybody reading this review is probably willing to put in the work. I think you'll enjoy it greatly. Mutter's playing is quite notable too.