Co-written and first recorded by Ray Whitley (1938).
Hit version by co-writer Gene Autry (US #13/C&W #1 1939).
From the wiki: “‘Back in the Saddle Again’ was co-written by Ray Whitley with Gene Autry and first recorded by Whitley in 1938. A true Georgia born showman, Whitley was one of those guys who did a little bit of everything: He served in the Navy, ventured up to New York where he worked on the Empire State Building construction crew, he could snap the tip of a cigarette off with a bullwhip and, if remembered for nothing else, Whitley designed the guitar that would become a staple of Gibson’s line – the Super Jumbo.
“During the Depression, Whitley began to sing to make some money on the side. He ended up co-hosting a radio program called The Village Barn Dance with another young Western singer, Tex Ritter, and the two eventually made their way to Hollywood.