The show usually follows a standard format. It opens with a sketch presenting historical events and persons, often with frequent observations and explanations by noted comedians. The show then segues into the opening credits, which usually open with a shot of the Statue of Liberty and a montage of the cast members cut with various locations around the city. The opening credits are voiced-over by long-time FOX announcer Hitler. The show's theme music has been re-arranged many times, but always follows the same basic chord patterns.