Johann Nepomuk della Croce was very popular in his time, it has been estimated that he painted 5,000 portraits. In 1780 or 1781 he painted the Mozart family. The portrait of Wolfgang Amadeus that you see above is a detail of that picture. It is considered one of the best portraits from his lifetime and was the main source for the well-known posthumous one by Barbara Krafft.
The last movement of the Piano Sonata No. 11 in A major, K 331, Alla Turca, popularly known as the Turkish Rondo, is one of Mozart’s best-known piano pieces. It imitates the sound of Turkish Janissary bands, the music of which was much in vogue at the time. It is not known where and when Mozart composed the sonata. Vienna or Salzburg around 1783 is thought to be most likely, though Paris and dates as far back as 1778 have been suggested as well.
Vivat! Crescat! Floreat! 
