Jordaan Mason & The Horse Museum - Divorce Laywers, I Shaved My Head
The whole album is about a marriage and divorce, but there's this recurring, sexual horse imagery. It's very emotional and awesome.
http://www.youtube.com/watch?v=mloBFYwrJsk&feature=related - OHMYGODOHMYGODOHMYGAWWWD!
If 'Safe as Houses' counts, I'd like to nominate that too.