The Greatest Oldies Duets of All Time, Part Two

Part two of the series, in honor of Valentine's Day -- the greatest duets in oldies history, including some songs that deal with the bad side of love, some which pledge eternal devotion, some which are sexy and playful, and at least one that doesn't count as a duet at all. What am I going on about? Find out here in my list of ten other great oldies duets.