[2][3][4] He founded in Paris the theater Der Jüdische Spiegel (The Jewish Mirror), where many works of composers such as Schönberg, Anton Webern and Alban Berg were first performed.

A score of years later, DeutschlandRadio Berlin collaborated with the Staatsphilharmonie Rheinland-Pfalz, conducted by Frank Strobel, to produce a record of "this extremely rare and totally unknown symphonic work".

[1] As film music the "piece is scored for a theater orchestra of the kind typically found in European cinemas of the day".

It brings to mind the work of Kurt Weill and Stefan Wolpe, and foreshadows Max Steiner's modernist film scores, adopting expressionist atonal twelve tone leitmotifs.

In Paris, among his hundreds of students, there were composers: Jorge Arriagada, Girolamo Arrigo, Colette Bailly, Sylvano Bussotti, Philippe Capdenat, Gérard Condé, Rudi Martinus van Dijk, Ahmed Essyad, Jacqueline Fontyn, Sylvia Hallett, Donald Harris, Félix Ibarrondo, Oswaldo González, György Kurtág, Philippe Manoury, Patrick Marcland, Luis de Pablo, Yves-Marie Pasquet, Kyriakos Sfetsas, Raymond Vaillant; American composers David Chaitkin, Edmund Cionek, Eugene Kurtz, Allen Shearer, and Dean C. Taylor; British composer Nicholas Maw; Canadian-born Srul Irving Glick; the conductor Alexandre Myrat; and music critic Heinz-Klaus Metzger.

[A] In late 2013, a recording of Deutsch conducting the Suisse Romande Orchestra in a performance of three "master works" by Arnold Schoenberg was released.