However, the true meaning of the Felina title appears to have been the Marty Robbins’ song El Paso. When Walter White is rummaging through the glove compartment of a stolen car, a Marty Robbins’ cassette tape falls out. When he finds the keys and drives off in the car, the song El Paso starts playing.
The lyrics of El Paso are about a gunfighter who falls in love with a Mexican girl named Felina. Near the end of the song, the gunfighter gets in shootout, where he gets struck in the side by a bullet. At the end of the song, the gunfighter lays dying, while Felina kneels by his side. If you listen to the full song below, then you will notice that several lines of the song could be interpreted as laying out what happens in the Breaking Bad finale.