Music is a great way to teach Spanish in the classroom! while it's fine to sometimes let the students just enjoy the music; it's also a great idea to let them have a handout to really focus their listening skills. This is a 3 page handout. The first page is really just informational and used as a 'hook' to catch the students interest. The 2nd page is the fill-in-the blanks activity and the third page involves higher thinking skills to answer questions.
For teaching duration: I like to use these as a Song of the Week and play it at least once every day.
Thanks for looking! Cyber Profe