“On July 8, 1965, Otis Redding was a young soul singer of modest renown, less than three months removed from releasing his first Top 10 r&b hit single. By July 10, he had become something else entirely: It took only 24 hours to lay down 10 of the 11 songs that would make up *Otis Blue: Otis Redding Sings Soul*, arguably the 1960s' greatest studio-recorded soul LP. (The only track not recorded at th”