Margaret Writes:

>One more case of such "foreign" additions are additional instrumental
>parts, usually trumpets and timpani parts.  When a symphony, concerto,
>mass, or another work was going to be performed at a more prestigious or
>spectacular occasion, it wasn't uncommon to add trumpets and timpani to
>the existing orchestration.  ...

Mozart's re-orchestration of Handel's Messiah, for example.  Right?

Bruce Alan Wilson