The Cuckoo, is a tune which I was shocked to learn has very "sexual" overtones. Dig it, the image of a little bird darting in and out of a big bush. Damn! I think the notes to an Ed Haley CD Vol. 1, (John Hartford production, on Rounder) brought this out, in a most revealing, and scholarly manner. Could this be related to the aforementioned waltz?..with lyrics? I will check some old sources for music, but I can't expect to find lyrics. By the way, John Fahey (guitarist) did a really fine piece called "Variations on the Cuckoo".