Wilhelm Rettich was a German Jewish composer, conductor and teacher. He fled Germany for the Netherlands in 1933 and survived the Nazi occupation by hiding alone in a cellar and composing music. Although he is not particularly well known today, Rettich’s music is highly regarded. His repertoire consists of chamber music, symphonic music, choral works and Lieder.
The full story is on the site of the Music and Holocaust website Wilhelm Rettich.