The Sagebrush Troubadour

The Sagebrush Troubadour is a 1935 American Western film directed by Joseph Kane and starring Gene Autry, Barbara Pepper, and Smiley Burnette. Written by Oliver Drake and Joseph F. Poland, the film is about two Texas Rangers traveling undercover as western troubadours in search of the killer of an old, halfblind man.

Following Frank Martins funeral, Martins granddaughter, Joan Barbara Pepper, meets her uncle, John Martin, and Lon Dillon, who flirts with her. Lawyer Henry Nolan reads Martins will, revealing that the deceased left John 5,000 and the remainder of the estate to Joan. John tells Joan that he suspects Gene of her grandfathers murder and persuades her to hold a masquerade dance to lure Gene into town.Meanwhile, Gene learns that Martin was nearly blind and relied on his horse Swayback to guide him. By following Swayback, whom Lon, John, and Henry have all tried to buy, Gene discovers that Martin had indeed located a gold mine. Gene and Frog escape a trap set for them at the dance and save Joan when she is nearly strangled by another guitar string. Then Gene discovers that Johns guitar is missing a string. ........

Source: Wikipedia