Marvin Gaye

Hit earned a pair of awards at the 1983 Grammys, the only two R&B legend claimed during his lifetime.

Eco-aware singer's music used to persuade endangered Barbary macaques to mate.

He actually revealed himself as more than the typical Motown factory drone well before 1971's 'What's Going On.'

Motown's budding iconoclast finally forged a path to the individualism – and conviction – that he'd aspired to for so long.

Soul legend returned after three-year break with a complicated and controversial set of songs that helped ignite a genre.

After meeting his future wife, the R&B singer's delivery took on a more seductive tone.

Singer became one of the first R&B artists to address ecological issues.