MUSIC AS LITERATURE

Wow music as literature..... that is mind blowing. I have never seen it in such way. A song/ rap is the same thing as poetry or telling a story they are exactly the same only shown in different ways. All of the listed things to find the difference to, i could not find one. A symphony tells as story usually. there is this one play were each character had its own instrument noise. It told the story quite well. My point is that a symphony a rap a song a poem..etc dont have many differences in my opinion.