My Dream- The MUSICAL??!??

It’s unusual for me to remember snippets of any dreams. Actually, I believe the strange parts are the ONLY ones I remember. But last night’s was especially odd.

It was a musical.

For no apparent reason, someone (sometimes myself) would burst into song during a “scene”. And from what I recall, the songs didn’t match the mood or scene.
For example (and as this was the last and best remembered bit before my alarm woke me), I was in the largest library I’ve ever seen (which looked like the inside of a cathedral) when suddenly everyone inside (and this was a large crowd) started singing “Purple People-Eater” with choreographed dancing. Including myself. We even did the funny voice for the monster/alien/whatever-it-is.
What I find particularly funny is that even my subconscious didn’t know all the words. When the song got to “pigeon-toed”, everyone sang the next part as “under-hoed, flying purple people-eater” which is what I always sing because I have no idea what they're saying.