Flanders and Swann were a British comedy duo. The actor and singer Michael Flanders (1922–1975) and the composer, pianist and linguist Donald Swann (1923–1994) collaborated in writing and performing comic songs. They first worked together at a school revue in 1939 and eventually wrote over a hundred comic songs together.
Between 1956 and 1967, Flanders and Swann performed some of their songs, interspersed with comic monologues, in their long-running two-man revues At the Drop of a Hat and At the Drop of Another Hat, which they toured in Britain and abroad. Both revues were recorded in concert and the duo also made several studio-based recordings.