Riders of Destiny

Riders of Destiny is a 1933 PreCode Western musical film starring 26yearold John Wayne as Singin Sandy Saunders, the screens second singing cowboy the first being Ken Maynard in the 1929 film The Wagon Master. It was the first of a series of Lone Star Westerns made for Monogram Pictures by Wayne and director Robert N. Bradbury and the first pairing of Wayne with George Gabby Hayes.

John Waynes dubbed singing, which bore no resemblance to his unique speaking voice, was the reason he soon abandoned the singing cowboy format he did play a singing cowboy though not Singin Sandy at least once later in Lawless Range he was chronically embarrassed during personal appearances when he couldnt accommodate children who clamored for a Singin Sandy song. Gene Autry was chosen by the studio as Waynes replacement in the new genre, immediately solving the live singing problem while ushering in a much lighter take on the format than Waynes grimly intense rendition.

Source: Wikipedia