Here's another song that uses the repeated single word rule. There aren't many songs that can say their lyrics are up to 3000 years old!
In 1959, Pete Seeger added music and a few words to Ecclesiastes 3:1-15. Six years later it became an international hit for The Byrds. Thanks MaryAnne, I really enjoyed that. It reminded me that Bryan Ferry has just released an unusual new album, and I was going to post 'Avalon' (it's the only one word title on the album), but it hasn't made it to YouTube yet. The album, 'The Jazz Age', is a 40-year retrospective of his solo and Roxy Music songs rerecorded as 1920s style jazz instrumentals. To give you an idea of how they turned out, why not try Slave To Love.