I did a lesson with a heritage speakers level 3 Spanish class and used this song as the basis for the lesson. I would be more than happy to email my lesson plan for free to anyone interested. Music is such a fun way to learn; I love to see other language teachers utilizing it as one of our many tools.
This is simply the worksheet that I used as the exit ticket for the lesson. The song is full of rich imagery and is amazingly poetic. I believe it can be an asset to any and all Spanish for Spanish speakers classes. Enjoy!