"Otis Redding remains an immortal presence in the canon of American music on the strength of such classic hits as "(Sittin' on) The Dock of the Bay," "I've Been Loving You Too Long," "Try a Little Tenderness," and "Respect," a song he wrote and recorded before Aretha Franklin made it her own. As the architect of the distinctly southern, gospel-inflected style of rhythm & blues associated with Stax Records in Memphis, Redding made music that has long...