Gosh, are we thinking of the same song, WLD? I remember being given this years ago by my voice teacher, and it was one of those 18th-century English "art" songs - Haydn set some of them (e.g. "My Mother Bids Me Bind My Hair") and I think various other classical composers did too. I was just tearing my bookshelves apart looking for it, but can I find it??!! I can hear the air to the refrain in my head, and there's a melisma on the word "delicate" which repeats. If it ever turns up and nobody beats me to it, I'll post.