Some time ago, I linked you to a few videos of the songwriting (and occasionally, performing) team of Flanders and Swann. Those postings brought a lot of e-mails from folks who'd never heard of them and who wrote me things like, "Where have these two wonderful men been all my life?" Well, here's ten more minutes — three whole songs — with Michael Flanders and Donald Swann. This is from their farewell (more or less) performance in 1967. It may help to keep the date in mind when you watch the first number…