Great Point This is a great point; please allow me to offer these thoughts. First off in fallowing the original story by L. Frank Baum the poppy field is just an obstacle that our 4 friends must over come. The W.W. of the West has no involvement at all in them being trapped there. The Land of Oz itself is broken into 5 regions, North, South, East and west, and of course the Emerald city in the center. Each Region has a favored color, and all the people, homes and plant and animal life reflect shades of this color. For example in Munchkin land the grass is a shade of blue, along with the trees, and the people all wear blue, and the animals are also blue tinted. The only thing of a different color is the yellow brick road. In the Quadling country all things are red or rose colored. When our 4 friends travel through this county they unfortunately encounter the Deadly Poppy field. These colors are what inspired the The 1939 MGM Film classic to include the song over the rain bow, and the hose of a different color changes to 3 of the 4 colors in OZ. MGM also converts the poppy field into a dangerous death trap by the W.W. of the West to play up the revenge aspect of the story. Which as I have mentioned earlier, the W.W. of the West did not want to really hurt Dorothy until Dorothy and friends come to destroy her. She wants the silver shoes for her own as they have a powerful charm, it is implied in the book to help her conquer OZ. As for the E.M. Band, they are the Muppet band and have played back up, and been part of the story with out choosing sides. In Muppet Treasure Island they play for the pirate’s musical number, but are not pirates themselves. As Floyed says, Play the gig and never get involved with politics. I hope this helps.