Avrum Leib Burstein closes his eyes, coaxes his accordion, and quietly sings a Hasidic melody, known as a niggun, by Rabbi Levi Yitzchak of Berditchev. Yechiel ‏"Chilik"‏) Frank joins him on clarinet, and together they transform the Young Yiddish Center in Jerusalem into 18th-century Berditchev.