I give this a 10/10. Didn't even need to wait for it to grow on me, it happened instantly the first time I heard it. I really don't have a problem with the length - I enjoy the long intro, even after many listens, for me it's such a brilliant scene-setting intro with great vocals, and builds up anticipation for the rest of the song. My attention is then held for the rest of the song, it keeps a good pace throughout and is catchy in a good way. I like the live version on "En Vivo" a lot too. "En Vivo" isn't a great album overall, but "The Talisman" is a good reason to listen to Disc 1 at least.