When I was small, my dad and I had a song we would sing together, to the tune of "The Girl from Ipanema": "Tall and green and young and sappy, the boy from Ent-anema is happy, and when he passes, each tree he passes sighs, ahhhhh...." But we also did the Ents go Marching, too: "The ents go ma-arching five by five, the little one stops to find his wife, and they all go marching down...."