An interesting phenomenon in American popular music, the sudden popularity of nonsense lyrics in the '40s. "Three Little Fishes", "Hotsut Ralson", "Flatfoot Floogie", a wonderful Nat Cole tune called "Ke-mo, Ki-mo", "Mairzy Doats", etc. And now I think on it, bebop's avenue to popular acceptance was through "Ooh-bop Sh-Bam", "Ool-ya Koo", and other tunes that tried to make words directly into music.