Answer... nope, not the Can Poetry Matter guy, but Jack Spicer:
"Poetry demands a human voice to sing it and demands an audience to hear it. Without these it is naked, pure, and incomplete - a bore.
If plays were only printed and never acted, who would read them? If songs were only printed on song sheets, who would read them? It would be like playing a football game on paper. Do you wonder where the audience is?
If affects the nature of the poetry too. Thee was a time in the middle ages when music was mainly written and not sung. It was a time when crab canons were composed, complicated puzzles made of notes that no ear would think of hearing. Poetry, when it is removed from a living audience, loses its living form, becomes puzzling. It becomes blind like the salamanders that live in dark caves. It atrophies.
Orpheus was a singer. The proudest boast made about Orpheus was not that his poems were beautiful in and of themselves. There were no New Critics then. The proudest boast was that he, the singer with the songs, moved impossible audiences - trees, wild animals, the king of hell himself.
Today we are not singers. We would rather publish poetry in a little magazine than read it in a large hall. If we do read in a hall, we do not take the most elementary steps to make our poetry vivid and entertaining. We are not singers. We do not use our bodies. We recite from a printed page."