Thanks for posting Timothy Winters, Kevin, I recall hearing it sung some years back but I can't remember who.

The only other poems I recall hearing set to music are the Nursery Rhyme of Innocence and Experience which I've recently started singing again from the late Paul McGrath, Herod which is on Lynne Heraud and Keith Kendricks album and (I can't recall) who sang it but the poem that starts

I stood in the windy city by the side of the frozen fen

or something like that, which may be the ballad to Katherine Of Aragon referred to by Lanfranc above but it was also some years back.

I wish I knew more.