A presentation by Prof. Edwin Seroussi in the conference "Jewish Music Research: Case Study Hamburg" convened by Prof. Reinhard Flender at the University of Music Hamburg, March 1-3, 2022. For a video of the complete conference, see https://www.youtube.com/watch?v=PUmpuQlOHk8, https://www.youtube.com/watch?v=jh5Q5zpfa84