I don’t believe that poems are written to be heard, or as Mill said, to be overheard; nor are poems addressed to their reader. I believe that poems are a score for performance by the reader, and that you become the speaking voice. You don’t read or overhear the voice in the poem, you are the voice in the poem. You stand behind the words and speak them as your own — so that it is a very different form of reading from what you might do in a novel where a character is telling the story, where the speaking voice is usurped by a fictional person to whom you listen as the novel unfolds.