The piece of music once known as Wolfgang Amadeus Mozart's Symphony No. 2 in B♭ major, KV 17, is now considered to be not by him, but by possibly his father, Leopold Mozart. This symphony has been given the number Anhang C 11.02 in the sixth edition of Ludwig Ritter von Köchel's catalog of Mozart's music., and is now also catalogued as Eisen B♭ 6 in Cliff Eisen's catalog of Leopold Mozart's symphonies.
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