Moisei Beregovsky (1892 – 12 August 1961, Russian: Моисей Яковлевич Береговский, romanized: Moisey Yakovlevich Beregovsky; Yiddish: משה אהרן בערעגאָװסקי, romanized: Moyshe Aron Beregovski) was a Soviet Jewish folklorist, musicologist and ethnomusicologist from the Ukrainian SSR who was a key figure in the study of Jewish music. He collected, studied and published about klezmer music, Yiddish song, wordless nigun melodies, and the music of Purim plays. His published collections, mostly only released after his death, remain important sources of Jewish music from the late Russian Empire and early