Gesner produced film and animated inserts for the test pilots and first season of the show, notably the number bridges featuring dots and several segments with live-action hands (labeled "Features," "Wall," and "Strong" in ASCAP registration). The scores for these segments were also registered in Gesner's name (although according to Sesame Street: A Celebration - 40 Years of Life on the Street, Joe Raposo actually scored). His own song, "Happiness Is" from the Charlie Brown musical, was also performed in early episodes. (First: Episode 0007)