Rush,
Of course, I'm still not sure why Joseph Goebbels banned Charlie Chan at the Opera . . . unless it was because Mme. Lilli Rochelle (whom Goebbels, Hitler, etc., could look to as a shining example of Aryan Womanhood) got murdered!
They probably wouldn't care that she was an adulteress, possibly contributed to her husband being in a burning building that cost him his memory and hid her daughter to appear younger!
It may be because the opera "Carnival" was written by Oscar Levant, known even then as a friend of that decadent George Gershwin who wrote the music for the non-Aryan "Porgy and Bess." Levant himself wrote a lot of that verboten jazz.