Walt pops it into the tape deck and drives off, and check out what the lyrics are predicting for him:
I saddled up and away I did go, riding alone in the dark.
Maybe tomorrow, a bullet may find me.
Tonight nothing's worse than this pain in my heart.
Well, that doesn't bode well, but when you look at the story told by the rest of the lyrics, it gets downright spooky:
A cowboy falls for a girl named Felina -- which happens to be the title of the episode -- and, stealing a horse, flees town to New Mexico after he kills a man who threatens their relationship. Later, the outlaw returns, explaining, "My love is stronger than my fear of death," and during a shootout he is struck by a stray bullet. The cowboy dies in the arms of Felina, his true love. Just like Walt died accompanied by his true love: no, not his wife or his family. Meth.