Fred Rogers wrote the music for Mister Rogers' Neighborhood. Whenever Rogers began to feel anxious or overwhelmed, he would play the Mister Rogers' Neighborhood theme song on the piano as a way to calm his nerves. Maxwell King, author of the forthcoming book The Good Neighbor: The Life and Work of Fred Rogers, wrote in The Atlantic that Mr. Rogers carefully chose his words while filming Mr. Rogers’ Neighborhood. There's a reason why the stoplight is always yellow in the opening sequence to Mister Rogers' Neighborhood. Though Mister Rogers’ Neighborhood and Sesame Street were both PBS shows, they were technically competitors—though the show’s producers didn’t exactly act like it.