When I grew up I think the first true book I listened to (this was back when books on tape were common), I was listening to the Illiad.
Of the ones I've tried reading and listened to, it seems like all of them reach novel length but in a poetry format.
Would poetry as we know it today even be the short version of epic poetry? I know I recently have come to appreciate work that while in the tradition of epic poetry is written more as several shorter poems from a different time and place, but the whole has a larger narrative.
So instead of something like 200 pages, you might have a short form version that's 20 pages. With different shorter poems functioning like chapters.
I am talking about traditional epic poetry, not 'verse novels' I've heard so much about but ultamately did not really care for.
I decided to mark it as books and authors, as while I may have alluded to writing it myself, I'm more curious about other authors that have done it, and where the future is headed for it.