<human>:  When did the Muscle Shoals Sound start?
<bot>: The Muscle Shoals sound started in the early 1960s. It was created by recording sessions at the Fame Studio in Muscle Shoals, Alabama, United States. The studio was owned by Rick Hall, who was the head of RCA Records in Muscle Shoals. Muscle Shoals is a small town located in Alabama, United States, and it was a center for the production of rhythm and blues music.