Walter Meyer wrote in reply to my incomplete description:

>>Last but certainly not least is the first movement of the underplayed
>>Symphonia Concertante for violin, cello, oboe, bassoon and orchestra in B
>>flat Major. It's a gem! ...
>
>Label?
>And whose?  Mozart's?  Haydn's?  Someone else's?

Thank you, Walter. I thought nobody had caught that. It was Papa Haydn. I
blush to have omitted it.

Mimi