This is the mystery waltz I mentioned last post. I made my own half-practiced recording from the folio (Piano without a Master, 1851), then thought to (duh) look up the title. Buy a Broom is an a.k.a. for Did You Ever See a Lassie. We used the melody for a song in Boot Camp, but luckily I don't remember the lyrics.
Yes, when all else fails, look things up. Tonight's lesson from... cyberspace (echo: space... space....)