A really powerful song
I'm not entirely sure what "E" is, but "Paradise on E[arth]" would fit the emotions it brings to mind. It makes me think of how hard humans have tried to create paradise for themselves only to have something, whether it be politics, war, or natural disasters, tear it all apart.
You say you hope it's your final demo... I dunno what others have written on the song, but I have this: When the first real harmony comes in, there's that nice rhythm in the background with the sixteenth notes on every and-beat, but after a couple phrases it's never heard again. Was that what you meant in the caption, or was that lack of that rhythm intentional? I think it's a beautiful song either way, though.