Update: last night, for the first time, I sang The Two Brothers/Two Pretty Boys in a song session* "after" Lucy Stewart, rather than after Peter Bellamy. It sounded surprisingly different, and people seemed to think it worked. I did wonder about sliding back into Bellamese for the last verse

("Aa-aa-aa-and WHAT! SHALL I- TELL! YOUR STEP MO-o-o-o-ther")

but in the event I thought better of it.

Next stop On Board A Sweet Lovely 98...

*by which of course I mean, sitting right where I am now.