Answer:
In the last sentence of the first paragraph, you use the contraction don't twice. If this is an essay i advise you not use that. (even though that rule gets me every. single. time.) Plus it would add to the formal tone you have throughout your essay.
in the second sentence you say peoples, i would suggest you say instead, "the evidence that other people have behind this claim . . ."
i would also suggest that you add evidence of other writers that did better than bob dylan and point out what they had that he did not.
Overall it sounds really good. I am sorry that i do not know much about this topic, so i can't give you super specific things that you could add, but i hope this helps. Anyway, good luck, have a good day, and be tiger fierce!! :)