And I found this on the Sandy Denny site:

Fairport Convention: Crazy Man Michael
[Richard Thompson, Dave Swarbrick]

``Richard had the words set to a trad tune and I thought that the words were great but that the tune weakened it ... He said that if I felt like that, why didn't I write a tune for it - so I did ... Funnily enough, I wrote the piece on the piano and I don't even play piano!'' (Dave Swarbrick, "Hokey Pokey" #18).

Noreen