Walker worked as a disc jockey in the early 1950s at KENS in San Antonio, Texas before signing with Decca Records . His first hit, "Only You, Only You" was co-written with Jack Newman and reached No. 9 on the country chart in January 1956. Walker later signed with Columbia Records and reached No. 2 with a Harlan Howard song, " Pick Me Up On Your Way Down ". His other hits include "Who Will Buy the Wine", "Wild as a Wildcat", "Don't Squeeze My Sharmon", and "I Wouldn't Take Her To A Dogfight." Many of his records featured harmony vocals by Ray Price . Walker played a minor role in the 1985 Patsy Cline biographical film Sweet Dreams . 
Mr Walker, I’ve never met you, never been to the western roundup, but I do watch your show,matter of fact, just finished watching you in Send Me No Flowers. I watched you speak in your Bio about what you had to do to get to where you are. It is a testimony that needs to be heard around the world. Thank you for your work and your loyalty to God. As I write this I feel another tear rising, I want you to know that as a 56 year young man in the little city of Wilson, NC, I recognize your humble spirit and just know you’re already doing what God wants you to do. Maybe one day I’ll be able to meet you face to face, but I’m good for now, because I know you in spirit. I wish you and your wife only the best, not what life has to offer, but what God Blesses you both with. Stay Blessed my brother.