In the early 20th century, , often called the "father of Jewish musicology," was living in Jerusalem. He was obsessed with preserving the musical heritage of the Jewish diaspora. Around 1915, he heard the Sadigurer Niggun and transcribed it, recognizing its infectious energy. The Turning Point: 1918
Today, the "original" spirit of the song remains a testament to resilience—taking a prayer from a small Ukrainian village and turning it into a universal call for joy.
Idelsohn felt the wordless Niggun needed lyrics to match the celebratory mood. He selected a few lines from , emphasizing "rejoicing" and "gladness": Hava nagila (Let us rejoice) V’nism’cha (And be glad)