As the 1960s ended, Herbie Hancock embarked on a grand creative experiment. Having just left the celebrated Miles Davis Quintet, he set out on the road, playing with his first touring group as a leader until he eventually formed what would become a revolutionary band. Taking the Swahili name Mwandishi, the group would go on to play some of the most innovative music of the 1970s. In You'll Know When You Get There, Bob Gluck offers the first comprehensive study of this seminal group, mapping the musical, technological, political, and cultural changes that they not only lived in but also effected. From protofunk rhythms to synthesizers to the reclamation of African identities, he tells the story of a highly peculiar and thrillingly unpredictable band that became an emblem of American genius.