I like the waltz
Simply becaltz
It makes me feel so waltzy

The song is by Mason Williams (who else? It's probably part of his five-part Dada Trilogy) and I'm pretty sure it's title is The Last Great Waltz. Mason Williams was a writer for the Smothers Brothers, in addition to having pop hits with his classical guitar recordings of Classical Gas and Greensleeves. I may be able to find the book I used to have of his songs.