Yul: I agree with Carmina Burana, but for me it would be "In Trutina", especially as sung by Evelyn Mendac on the Ozawa performance. Listen to the luscious way she sings "lascivos amor". I've heard a number of others sing it, but not as well.
Incidentally, I also agree with The Poem of Ecstasy.
Incidentally, I also agree with The Poem of Ecstasy.