The Muppets Present...Great Moments in American History dialogue track. The Muppets Studio and Muppet performers Steve Whitmire, Eric Jacobson, and Dave Goelz provided consultation, as well as recording the voices for their respective characters. Kermit the Frog, Miss Piggy, Fozzie Bear, Gonzo, and Sam Eagle are featured in the show. A live cast member portrays James "J.J." Jefferson, the town crier who engages the audience in the "Declaration of Independence" sketch. Each show performance features one of the following sketches: The show's development started in the spring of 2014, following the release of "Muppets Most Wanted". Originally, the show was only going to feature Sam Eagle interacting
The Muppets also generally made of softer materials. They are presented as being independent of the puppeteer, who is usually not visible—hidden behind a set or outside of the camera frame. Using the camera frame as the "stage" was an innovation of the Muppets. Previously on television, there would usually be a stage hiding the performers, as if in a live presentation. Sometimes, they are seen full-bodied; this is achieved by using invisible strings to manipulate the characters, with vocals added at a later point. Since 2006, Disney has contracted Puppet Heap to produce and maintain newer models of the Muppets. The