Wolfgang Amadeus Mozart's String Duo No. 2 in B-flat major for violin and viola, K. 424, the second of the two Mozart wrote to complete Michael Haydn's set of six for the Archbishop Colloredo, was written in the summer of 1783. It is in three movements:Adagio, common time Andante cantabile, E-flat major, 6/8 Andante grazioso, cut time
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