It’s a Three Stooges short (a Shemp) co-starring Jock O’Mahoney — and it does a pretty good job of spoofing singing cowboy pictures, scattered among all the usual Stooge nonsense.
You can watch it on Youtube here. And it appears on The Three Stooges Collection, Vol. 6: 1949 – 1951 DVD set. (By the way, be sure to check out emilsitka.com, one of the most comprehensive, exhaustive and obsessive film-related web sites I’ve ever seen.)
I haven’t devoted near enough blog space to Mr. Mahoney. Time to pull the trigger on that bootleg DVD of George Sherman’s Last Of The Fast Guns (1958).