Warm bluesy keys and gently swinging drums make up the base of his signature sound. On top he variously involved funk bass, fluttering jazz flute, hand-drums and shimmering tambourines. And of course, the glue that stuck it all together; his own caramel-smooth vocals. Timelessly cool in both melismatic and recitative style, like a wise oracle, he intoned socially conscious messages.  Tracks like ‘Johannesburg’ tackled a South African mining strike and ‘Winter in America’ spoke for a disillusioned American populace. ‘The Revolution Will Not Be Televised’ (1970) is a three minute recitation of satirical poetry over congas and bongo drums. Scott Heron quotes adverts and laconically notes, ‘The revolution will not go better with coke’. ‘The rhythmic style is clearly a precursor to MC rap styles that came to popularity during the late 1970s and 1980s. If Hip-hop was born in the South Bronx then it was Gil Scott Heron who planted the seed deep in the earth.