Jimmie Nelson, also known as "Big Jim" Nelson, was an American blues and rhythm-and-blues singer. His musical style, characterized by a rich, powerful voice and emotive delivery, was heavily rooted in the blues tradition of the southern United States. Nelson is most well-known for his 1951 hit "T-99 Blues," which reached number one on the Billboard R&B chart and became a standard in the blues genre. Despite his limited discography, Nelson's contributions to blues and R&B have had a lasting impact on these musical styles.