I think that Sarah MacLaghlin's song, "Possession" is a great example of a song that deals with passion.  The opening track to her album, "Fumbling Towards Ecstasy", the song is a great depiction of not only love, but the intense feelings of desire and zeal that accompany it.  "Forces trapped in yearning", "Your words keep me alive," and "I won't be denied" are two of the many verses that capture this idea of intensity of love between two people, the embodiment of passion.