'Natural Black Inventions', from 1971, sees Rahsaan Roland Kirk excel on a whole host of instruments from tenor sax, clarinet and flute to the more esoteric 'black mystery pipes', 'palms' and 'bird sounds'! Incredibly, all of Kirk's instruments are played simultaneously without overdubs or effects on what is effectively a 'solo' album; washboard, tambourine and conga is the only accompaniment provided by other musicians. Idiosyncratic genius!