For some reason, Mimesweeper has blocked access to Bruce's site, so I can't check it until I get home. (maybe upset by P*** upon the grass?)
I appears from what you say that there ARE candidates for a suitable tune. For the purposes of a performance, I don't suppose it matters which, as long as the tune fits the song? Just thought it would be nice to do Famous Flower to a contemporary tune.
The summertime tune mentioned was just Summertime, not In Summer Time. Might or might not be different I suppose.