sentences:  In album notes, Robert Matthew-Walker writes, "With such a polyglot collection of quotations and influences, only a composer of genius could have moulded this variety into a cohesive whole.The miracle is that Shostakovich succeeded, and constructed a distinctive and indestructible work..." He also notes that the concerto contains a strong element of parody, beginning with a reference to Beethoven's "Appassionata" Sonata, and ending with "an uproarious quotation" of Beethoven's "Rage Over a Lost Penny" and a slice of Haydn's D major Piano Sonata.The last movement's final cadenza is introduced with exactly the same trill as in the final bars of Beethoven's Piano Concerto No.