Jerry McCain was an American blues musician known for his distinctive harmonica playing and songwriting. His signature sound incorporated elements of traditional blues, rhythm and blues, and rock and roll, with his harmonica skills earning him recognition as one of the genre's notable performers. His most influential work, "She's Tough", has been widely covered by other artists and played a significant role in shaping the blues music of the mid-20th century. McCain's work has been instrumental in the evolution of blues and his influence can be felt in many contemporary blues styles.