for rehearsals, a stunt double, and a "fighter" for scenes involving battles with other animals. Theme music Lassie used several pieces of theme music during its long broadcast history. For the first season, "Secret of the Silent Hills (Theme from the Lassie TV series)", is used for both the opening and ending theme. Composed by William Lava, the orchestral theme was originally created for the 1940 radio show The Courageous Dr. Christian. For the second and third season a variation of this theme, titled simply "Lassie Main & End Title", was used for the opening and ending theme. Raoul Kraushaar, the music director for the series, is the listed composer for the theme; however the changes he made to the original are so slight that only a trained ear can tell the difference. The third theme used for the series is an orchestral rendition of the aria, "Dio Possente" (Even Bravest Hearts May Swell) from Charles Gounod's opera, Faust. The exact time this theme started being used is uncertain due to conflicting records; however it is agreed that it was the third series, and was used for at least part of season four for the change of ownership of Lassie. The most famous of the Lassie theme songs appeared at the start of the fifth season. Copyrighted as "Lassie Main & End Title", the song was created by Les Baxter, with the whistling itself performed by Muzzy Marcellino. Nicknamed "The Whistler," it remained the series theme for the rest of the "Martin years". With the coming of the "Ranger years", the opening and ending theme was changed to an orchestral version of "The Whistler". With the coming of the "Alone" years, and continuing throughout the ranch/Holden family years the theme was changed again, this time to Nathan Scott's arrangement of the traditional folk tune Greensleeves, which become the series theme song for the rest of its run. For the final two seasons, the familiar closing visual of Lassie standing on a hill and lifting her paw, was replaced by the credits on a green background, and flashing from one slate to the other instead of scrolling as in most of the series run. Television composer Nathan Scott scored the music to nearly every episode between 1963 and 1973, except for four episodes. Sponsor Campbell's Soup Company sponsored the entire nineteen-year run of Lassie. In one of the first instances of