Headin' for the Rio Grande

The story

Singing cowboy Tex Saunders finds himself in a heap of trouble when he agrees to investigate local gangsters at the behest of a lovely lady. As payment for his pains, he's framed by a saloon owner for killing bad guy Red Dugan and forced to sweat it out in jail. Will his faithful sidekick, Chilo, show up to save his skin … or will Tex have a date with the gallows?