Aye, edgar, so have I. Joan Baez has a fine voice for such a piece, a lilting and sometimes plaintive voice.
Another poem I like very much, "The Great Silkie of Sule Skerrie", was likewise put to music, and Baez sang it in the 60's, as did Judy Collins and others. I find the idea of silkies rather entrancing.
When I first ran across the poem, I was curious to know where lies Sule Skerrie. I found it is but a tiny speck, a rock I suppose, far to the north of Scotland. Ever since, I have had a pipedream of going there someday. But not today; I'm sufficiently cold right here in mid-America. Today, I'd rather be a deerhunter in a southern greenwood, stalking a buck with my 35mm Canon. God only knows what I'll prefer to be tomorrow.
Here's the silkie poem.
http://www.bartleby.com/243/31.html