Mercy, Mercy Me: The Art, Loves and Demons of Marvin Gaye, by Michael Eric Dyson (2004)
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Rather than attempting another complete biography, Dyson focuses on Gaye's passions and demons, putting them in the cultural context of the times, and of Dyson's own childhood.
Divided Soul: The Life of Marvin Gaye, by David Ritz (2003)
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This is considered to be the definitive record, at least so far, of Marvin Gaye's enigmatic life.