Now that I think about it, Fiddler on the Roof SHOULD have Hebrew or Yiddish lyrics, but doesn't. I certainly wouldn't count the "Da-di-ya-da-di-ya-dai-dai," or whatever meaningless syllables were sung in "If I were a Rich Man," although using meaningless syllables instead of words while singing a melody is common in Jewish prayer. A song without words but with nonsense sounds is called a "niggun," pronounced nee-GOON. Niggunim (the plural) are often used for spiritual chants.
You alone can make my song take flight.