For me, prose is never a poem. Because with prose there are so very few tools to create the music. And one of the most important tools missing is the ability to create silences, as you can in poetry by how you fashion the lines and breaks within the lines and stanzas.
The silences express so much and are so crucial in music, and prose does not allow for the creation of these silences, these white spaces on the page or the computer screen.
Poetry is so close to music, not just in cadence and sound but in silences. That's why, to me, I can't talk about prose poems. I can talk about poetic prose.