Actually, the cuts in "Defying Gravity" are designed to withhold info, to, are they not? This was a topic back in the early days of the album's release. And always seemed unnecessary, since the number's drama (and excitement) are about Elphaba being trapped and truly rising above. Yet none of that is on the recording. Just a vamp and then her ascendancy.
"I'm a comedian, but in my spare time, things bother me." Garry Shandling