1940, Smiley Burnette ranked second only to Autry in a Boxoffice magazine popularity poll of Western stars, the lone sidekick among the top 10 (though offscreen he earned a reputation as being moody and temperamental), and when Autry left for World War II service, Burnette provided a sidekick to Eddie Dew, Sunset Carson, and Bob Livingston and appeared in nine other films with Roy Rogers. Burnette's movie horse, white with a black-ringed left eye, also became famous, first as Black-eyed Nellie, then as Ring-eyed Nellie, and finally as just Ring Eye. After leaving Republic in June 1944, he became the sidekick to Charles Starrett at Columbia Pictures in the new Durango Kid series. Starrett and Burnette were paired in 56 films, from 1945 to 1952. When Starrett retired, Burnette was still under contract, so Columbia teamed him with Jock Mahoney for a new series of Westerns. A pilot film with Mahoney and Burnette was completed, but never released; Columbia then reassigned Burnette to its Gene Autry series, reuniting Burnette with his former partner. Singer-songwriter Smiley Burnette wrote more than 400 songs and sang a significant number of them on screen. His Western classic, "Ridin' Down the Canyon (To Watch the Sun Go Down)", was later recorded by Willie Nelson, Riders in the Sky, and Johnnie Lee Wills. Other compositions included "On the Strings of My Lonesome Guitar" (Jimmy Wakely's theme song in the 1940s), "Fetch Me Down My Trusty .45", "Ridin' All Day", and "It's Indian Summer" as well as "The Wind Sings a Cowboy Song," "The Old Covered Wagon," and "Western Lullaby." He also composed musical scores for such films as The Painted Stallion and Waterfront Lady. His songs were recorded by a wide range of singers, including Bing Crosby, Ferlin Husky, and Leon Russell. His performance of "Steamboat Bill" appeared on Billboard's country chart in 1939. Inventor Burnette devised and built some of his unusual musical instruments in his home workshop. His "Jassackaphone", for example, which he played in the film The Singing Cowboy, resembled an organ with pipes, levers, and pull mechanisms. In the 1940s, he invented and patented an early home audiovisual system called Cinevision Talkies. Each package contained a 78 rpm record with four of his songs and 15 35 mm slides. The slides were to be projected in order and advanced each time a short tone played on the record during the songs. An