Hava Nagilah

"Hava Nagila" (Hebrew: הבה נגילה‎, Havah Nagilah, "Let us rejoice") is an Israeli folk song traditionally sung at Jewish celebrations. It is perhaps the first modern Israeli folk song in the Hebrew language that has become a staple of band performers at Jewish weddings and bar/bat mitzvah celebrations. The melody is based on a Hassidic Nigun and it was composed in 1915 in Ottoman Palestine, when Hebrew was being revived as a spoken language for the first time in almost 2,000 years (since the destruction of the Second Temple in 70 CE). For the first time, Jews were being encouraged to speak Hebrew as a common language, instead of Yiddish, Arabic, Ladino, or other regional Jewish languages.

Abraham Zevi Idelsohn (1882–1938), a professor at Hebrew University, began cataloging all known Jewish music and teaching classes in musical composition; one of his students was a promising cantorial student, Moshe Nathanson, who (with the rest of his class) was presented by the professor with a 19th-century, slow, melodious, chant (niggun or nigun) and assigned to add rhythm and words to fashion a modern Hebrew song. There are competing claims regarding Hava Nagila's composer, with both Idelsohn and Nathanson being suggested.

...
Wikipedia