Oi Va Voi is a British band that takes its name from a Yiddish-derived exclamation popular in modern Hebrew meaning, approximately "Oh, dear!" It is an experimental band from London, England, which formed in the late 1990s. Their sound draws on Jewish music from both the Ashkenazic and Sephardic traditions, including both klezmer and Ladino music, as well as Eastern European, especially Hungarian folk music, as well as contemporary electronic music.