Wherefore art thou Shadow of War?

The game has one thing that is 100% a reflection of the literary works. Poetry puzzles!
This is a companion discussion topic for the original entry at http://www.quartertothree.com/fp/2017/10/09/wherefore-art-thou-shadow-war/

Tom Bombadil will sing and dance it for you!

This sounds interesting - are there any examples in maybe a video or something?

What do I have in my pockets? Handses!