As I watched a youtube video on a Math class in Westerville, OH where the teachers taught the concepts of "factoring" and even "trigonometry" through popular rap songs, I recognized the power of music.  After that Math lesson, the majority (over 95%) of the students passed the factoring test because they were able to recite the lyrics to the song and work out the process on their test. 
Therefore, I figured that such a thing could also transfer to learning Spanish vocabulary, verb conjugations, cultural information, etc.  I try to make up most of the songs (especially with my younger students in K-2), but thankfully, Pearson's Realidades has made up some "Canciones de hip hop" (Hip hop songs) on their website to assist the students with learning these concepts.  My students absolutely love it!   You should check it out! Here's the link! :
5B Canciones de Hip Hop