Composer and music theorist active in Germany, England and New York. Author of Shire Erets Yisrael (1935), an important collection of Hebrew songs from the pre-state Jewish communities in the Land of Israel.
For full biographies and official archive see:
Jascha Nemtsov, Another Schoenberg , Pro Musica Hebraica, October 1, 2011.
Jascha Nemtsov, Jakob Schönberg, Lexikon verfolgter Musiker und Musikerinnen der NS-Zeit, Musikwissenschaftliches Institut - Universität Hamburg.
The Jakob Schönberg Collection, the Library of the Jewish Theological Seminary (including biographical notes)
The Jakob Schönberg Collection at the Internet archive.