I, too, have the "original" (?) piano demo where she clearly and somewhat, if possible humbly intones "I'll cast a spell on you - [so] you won't forget me." That alone gives me chills and wrenches my heart something fierce. The live version circa 1975(?) is also spellbinding in the high-pitched and shrieking nature of her voice a la the early, early Rhiannon performances. I used to think she actually screamed "I'll cast on spell on you Linds - you won't for get me" toward the end of the song, but now that I am older and have better musical equipment, I do not think she is actually saying that. But, hey, at least I got the "pleasure" (

) of thinking she kept the original line in for awhile at least!!!!
The only thing I do not really care for on The Dance version is the produced nature of the live recording of the actual music. But, even with my perhaps misplaced idiosyncrasy about that, I LOVE The Dance version.