Remembering Marvin Gaye: <i>"What's Going On</i> will remain both relevant and thrilling for generations to come"

With today marking what would've been Marvin Gaye's 87th birthday – and yesterday marking the 42nd anniversary of his death – we're looking back at Eamon Carr's reflections on the soul icon's 1971 masterpiece, <i>What's Going On...</i>