"Hava Nagila," meaning "Let Us Rejoice," is perhaps the best known Jewish folk song and is a staple for bands playing at Jewish festivals. The melody was taken from a Ukrainian folk song. The lyrics were probably written by Abraham Zvi Idelsohn in 1918 to celebrate the British victory in Palestine during World War I as well as the Balfour Declaration of 1917.
The Lyrics in English:
Let's rejoice and be happy
Let's sing and be happy
Awake, brothers, with a happy heart
Awake, brothers, awake brothers
With a happy heart
-------------------quote from http://messiahstudies.org/HavaNagila.html