Thank god for 'The Farmers Almanac' (www.almanac.com no less) for supplying this long searched after piece of information - which has actually kept me awake for minutes !!
Q: What was the longest song ever recorded and how long was it?
A: The Guinness Book of World Records states that The Devil Glitch, a 69-minute song containing over 500 verses, is the longest pop song ever recorded. It entered the record books in July of 1997.
Phew - not sure what I would have done without at last finding that out ... if anyone has this - I would love to know what verse 23 has to say - I somehow suspect it is reeeallly important like !!