Rav Shmuel Zalmanov was a Chabad Hasid. He was a yeshiva administrator in Warsaw and Vilna, and the director of the "Nihoah" choir (Chabad Hasidic melodies). He is best known for his editing of the Sefer HaNiggunim. At the request of Rabbi Yosef Yitzchak Schneersohn, the Chabad Rebbe, Zalmanov compiled, corrected, and preserved Chabad melodies. The book includes hundreds of transcriptions and explanatory notes.
For more on Zalmanov's work, see: Zigman, Tamar. “Sefer HaNiggunim.” (Hebrew) National Library of Israel Blog, December 7, 2017. https://blog.nli.org.il/nigunim/.
"Additionally, see the Sefer HaNiggunim in the catalog of the National Library's archive.
(The image is from Chabadpedia)
