Klezmer is an instrumental musical tradition of the Ashkenazi Jews of Central and Eastern Europe. The essential elements of the tradition include dance tunes, ritual melodies, and virtuosic improvisations played for listening; these would have been played at weddings and other social functions. The musical genre incorporated elements of many other musical genres including Ottoman music, Baroque music, German and Slavic folk dances, and religious Jewish music. As the music arrived in the United States, it lost some of its traditional ritual elements and adopted elements of American big band and popular music. Among the European-born klezmers who popularized the genre in the United States in the 1910s and 1920s were Dave Tarras and Naftule Brandwein; they were followed by American-born musicians such as Max Epstein, Sid Beckerman and Ray Musiker.

Yiddish is a West Germanic language historically spoken by Ashkenazi Jews. It originates from 9th century Central Europe, providing the nascent Ashkenazi community with a vernacular based on High German fused with many elements taken from Hebrew and to some extent Aramaic. Most varieties of Yiddish include elements of Slavic languages and the vocabulary contains traces of Romance languages. Yiddish has traditionally been written using the Hebrew alphabet; however, there are variations, including the standardized YIVO orthography that employs the Latin alphabet.