Jacques Presser wrote about Michael (Micha) in his book Ondergang : “Willem Mengelberg, who failed in so many respects, broke a lance for Michael Hillesum, ‘the greatest pianistic talent, that was seen at the Academy of Music in the last years.’ This appears from the preserved copy of a letter with ‘Herr Generalleutnant Rauter’.” For a couple of years Presser was the teacher of Michael on the gram…