Norman M. Schwartz on Amadeus:

>Several years ago, an interview with Shaffer appeared in the Sunday NY
>Times and he's no dope and is somewhat of a true Mozart scholar.

He may know something about Mozart, but he appears (or at least in the
movie) to know very little about 18th-century mores.  Much is made of the
Mozart character's "crudeness." Simply put, Mozart learned his manners from
the aristocracy, rather than from the middle-class prudes and parvenus.

Steve Schwartz