The musicians of the Concertgebouw protested when the orchestra manager picked Paul van Kempen as a stand-in conducter, because he conducted a few times for the Wehrmacht.

The musicians of Amsterdam’s distinguished old Concertgebouw protested when the orchestra manager picked Paul van Kempen to take the place of their sick-abed regular conductor.

Van Kempen was born Dutch and had been a Concertgebouw first violinist at 17. He had, years later, become conductor of the Dresden Philharmonic and…