Mozart’s Piano Sonata K.331 has totally 6 variations. This is the first variation.
As I a bit explained yesterday it was said that K.331 sonata had been written during his staying in Paris. However, A recent study shows that this was composed in 1783, 100 years memorial after The Battle of Vienna. “Alla Turca”—well-known the 3rd movement of the sonata seems to be reflected to the trend.