Eine stilkundliche Untersuchung mit Belegen aus dem Schaffen des Andrea Gabrieli.
Like many of his colleagues, he signed the Vow of allegiance of the Professors of the German Universities and High-Schools to Adolf Hitler and the National Socialistic State in November 1933.
At the time of the Musikwissenschaftliche Tagung 1938 [de] Schultz formed in the Musicological Institute the antipole to the party comrades.
He carried out extensive editorial work, including as director of the Haydn Complete Edition since 1929.
Worthy of mention are works to propagate the activities of the Museum of Musical Instruments as well as practical musical activities such as the founding of the student Collegia instrumentale and vocale, whose successes include performances of works from the 18th century.