Pierre Paquin responded to me:

>>If in Germany between the two world wars, it would have had to have been
>>before early 1933 and if in Austria, before the Anschluss in 1938.
>
>That's totally ridiculous.

I can't understand your dismissing as "totally ridiculous" my accurate
observation that the Nazis did not permit the performance by Aryan Germans
of the music of Mahler, a non-Aryan, where they held power.

Walter Meyer