In Old Santa Fe

In Old Santa Fe is a 1934 American Western film directed by David Howard, starring Ken Maynard and George Gabby Hayes, and featuring the first screen appearance of Gene Autry, singing a bluegrass rendition of Wyoming Waltz accompanied by Smiley Burnette on accordion. Although both Autry and Burnette were unbilled, the scene served as a screen test for the duo for subsequent singing cowboy films, beginning with The Phantom Empire 1935, which was Autrys first leading role.

A cowboy named Kentucky Ken Ken Maynard and his sidekick, Cactus George Gabby Hayes, meet a beautiful woman named Lila Miller Evalyn Knapp when her car accidentally goes off the road. Lilas father, Charlie Miller H. B. Warner, owns the dude ranch where Ken and Cactus intend to enter their prize horse Tarzan in a gruelling canyon race. Two other men, Chandler and Tracy, have also arrived for the race. They are also plotting to blackmail Charlie, who has a secret criminal past, for half of his gold mine and ranch operation earnings. Chandler also hopes that his blackmail scheme will force Charlie into granting him permission to marry Lila, who is showing a definite interest in Ken. Charlie refuses to be bullied, however, and claims he was innocent of the crime.Before the race, Chandler and Tracy trick the gamblingprone Cactus into a wager in which Tarzan will be the prize if Ken loses the race. To assure their victory, Tracy sets up a tripwire on the course, which injurs Tarzan and allows Tracy to win the race. After he discovers the broken wire and suspects foul play, Ken refuses to give up his horse to Chandler. Shamed by his foolish behavior, Cactus vows to identify the saboteur, whose bootprints he discovers in the ground near the wire. ........

Source: Wikipedia