No, I'm not knocking it! Love the original tune and it has been known for some of your folk musicians in Captain's Bar in Edinburgh to do their version of it, just improvising on the chord sequence - as was suggested further up the thread might have been Pachelbel's idea!

In answer to Mr Red, I used go to a songwriting workshop with an indie band musician: seems they DO start with chords first, (any sign of a predictable sequence and they'll throw in something totally obtuse!) then hang a tune on the words, then think what words they might to it. Complete reversal of my usual songwriting, where words come first, then tune, then what chords fit with tune!