Flanders and Swann was a British comedy duo consisting of Michael Flanders and Donald Swann, active primarily in the 1950s and 1960s. They were known for their witty songs and humorous performances, often combining music with clever lyrics that commented on various aspects of British life and culture. Their most famous works include songs like "The Hippopotamus" and "The Gnu," which showcased their unique blend of satire and charm. Flanders and Swann performed in theaters and on television, gaining popularity for their engaging style and memorable melodies, leaving a lasting impact on British comedy and musical theater.