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The blue Danube, Op. 314 An der schönen blauen Donau (By the beautiful blue Danube), Op. 314, a.k.a. The blue Danube is a waltz by Johann Strauss II, composed in … Blue danube waltz piano sheet music pdf Elk Lake The blue Danube, Op. 314 An der schönen blauen Donau (By the beautiful blue Danube), Op. 314, a.k.a. The blue Danube is a waltz by Johann Strauss II, composed in …