During the family’s first trip to Vienna, Leopold wrote to Salzburg that he went to the opera ‘on his own’ on 10 October; the opera playing that evening was Gluck’s Orfeo ed Euridice. There is no evidence that he saw or heard a performance of Gluck’s ballet Don Juan, premiered the year before, but some time later in the 1760s or possibly even as late as 1779, when Don Juan was performed in Salzburg by the traveling theatrical troupe of Johann Böhm, Leopold made arrangements of four dances from the ballet. The autograph score survives at the Bayerische Staatsbibliothek, Munich (shelfmark Mus. mss. 7859).