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German classical pianist Wilhelm Kempff offers an intense interpretation Ludwig von Beethoven's "'Hammerklavier' Sonata (Op. 106) in this release featuring a rare 1964 performance pulled from the archives of Radio-Canada. An additional performance of Beethoven's "Rondo in G Major" is also included, as is a conversation with Kempff in which the pianist discusses the famed "Hammerklavier" sonata.