Using galant schemata to produce upbeat, dancy music - from piano sketch to full orchestral score

"Giving fatherly advice about the art of composition, Leopold Mozart wrote to his son Wolfgang:

"The small is great, when it is natural — fluent and lightly scored and solid in its composition. To compose like that is more difficult than to write all the artificial harmonic progressions incomprehensible to most people, and melodies difficult to perform. Did Bach lower himself by this? Never! Good writing and the ordering of things, il filo [the thread]—this distinguishes the master from the bungler, even in trifles."

Leopold was seeking to influence his son by invoking a name that the younger Mozart held in high esteem.
"Bach," however, meant Johann Christian Bach (1735-1782), Italian trained."

(from R. O. Gjerdingen's Music in the galant style)