Frank Frost was an American blues musician, best known for his harmonica playing and soulful, Southern vocals. Born in 1936, he began his career in the 1950s, emerging as a significant figure in the Delta blues scene. His signature sound is characterized by raw, rhythmic harmonica work and gritty vocals, most notably displayed in his influential works such as "Jelly Roll King" and "Big Boss Man." Frost's music, often accompanied by the guitar work of bandmate Sam Carr, played a vital role in preserving and promoting the Delta blues tradition.