Mercy Dee Walton was an American blues pianist, singer, and songwriter, active during the mid-20th century. His music predominantly fell within the realm of West Coast blues and boogie-woogie, known for its rhythmic piano playing and storytelling lyrics. His most notable song, "One Room Country Shack," has been covered by numerous artists including Mose Allison and Buddy Guy, demonstrating his influence within the blues genre. Walton's distinctive style and significant contribution to blues music has earned him a place in music history.