Otis Redding and Carla Thomas were prominent figures in Southern soul and rhythm-and-blues music during the 1960s. Redding, known for his emotive, raspy vocal style, and Thomas, with her powerful, expressive voice, collaborated on several hits, including the popular "Tramp" and "Knock on Wood". Their music, deeply rooted in gospel and blues traditions, significantly influenced the development of soul music. The duo's work, particularly their 1967 album "King & Queen", is considered an important part of Stax Records' legacy, a label key to the Memphis soul sound.