One of my favorite songs to sing in karaoke is “Zoot Suit Riot” by the Cherry Poppin’ Daddies. It includes a passage with what appear to be nonsense lyrics, going something like this, IIRC (difference karaoke discs give different versions):
Zoo doot zi ou
Za say zoo sah
Zee zoo za zee zoo
Zah zah zah
Zote di i ou
Zah say zoo sah
Play aba rig op
Date day day
Are these words just meaningless filler, like “fa-la-la-la-la,” or are they some kind of 1940s Pig-Latin or slang?