Cool! I had never heard of him but just read the wikipedia article on him. He's definitely a musician who won the nobel prize in literature, he also wrote stories though, so I wonder if the prize was given to him because of his literary writing and not because of his musical writing. The article didn't seem to say either way, but that could be a reason why he wouldn't count for this question.
Officially, he won it "because of his profoundly sensitive, fresh and beautiful verse, by which, with consummate skill, he has made his poetic thought, expressed in his own English words, a part of the literature of the West."
It's probably referring to his poetry collections, not his music, though they don't make it too clear.
It's probably referring to his poetry collections, not his music, though they don't make it too clear.