I have been studying for a Spanish test recently. Over the weekend, I feel back into my old study habits. I listened to CDs and immersed myself in music.
In high school, I would do the same. Granted, this only works for language learning. But, on tests, I could come up with lyrics that had the same grammatical phrasing and check to make sure verb tense was correct. It also improved my vocabulary.
Some music, however, is better than others. My Spanish music of choice— for grammatical complexity— includes Ricardo Arjona. While the following song is not to complex, it is one of my favorites.