Eddie Floyd is an American soul and R&B singer-songwriter, best known for his work on the Stax record label in the 1960s and 1970s. He is most renowned for his hit song "Knock on Wood," which became a defining classic of the Memphis soul sound. Floyd's style is characterized by raw vocals, emotive lyrics, and rhythm-heavy arrangements, often featuring the signature Stax Records' brass section. His contributions have significantly influenced the development of Southern soul music.