I haven't looked at Rachel's page for some time - and I'm glad I just have again. As well as Sarah Says/Sarah More or Less, I remember listening to her rendition of Bonny Boy some time back, and thinking it was jolly good.

Very recently, after I came upon versions of the song by both June Tabor and Shirley Collins, I decided to learn it for myself. But after following the link you posted, must say I like your wife's version far more than either Shirley or June's - for whatever it's worth.

What's the drone thing? I noticed that it's sounds pitched to the lowest note in the song. Anyway it works well with such elegant and clean ornament.