Few figures in American music in the 20th century can compare to Marvin Gaye. As a singer, he was without peer, possessing a silky voice that could sound either angelic or seductive or, on his biggest hit "I Heard It Through the Grapevine," positively haunted. As a songwriter, he was equally skilled at writing with an eye for the charts and mining the depths of his heart, a combination that created many of the enduring classics of his era: "Hitch Hike," "Dancing in the Street," "Pride and Joy," "What's Going On," "Let's Get It On," "Got to Give It Up," and "Sexual Healing." Th...