I had guessed that flibbertigibbet was created for the musical, and only looked it up several hours ago, not expecting to find it. There'll be plenty of chances to use it if I can only memorize it.

My high school band director had a fondness for Mary Poppins and The Sound of Music arranged for band. I judged everything we played mainly by my instrument's parts, and found that I could handle the many rehearsals plus performances of The Sound of Music better than those of Mary Poppins. Had the sheet music included the lyrics, I could have improved my vocabulary. Reading the lyrics while counting rests, though, might have been jeopardous.