Positive Vibrations tells of how reggae was shaped by, and in turn helped to shape, the politics of Jamaica and beyond, from the rudies of Kingston to the sexual politics and narcotic allegiances of the dancehall. Insightful and full of incident, it explores how the music of a tiny Caribbean island has worked its way into the heart of global pop. From Marcus Garvey's dreams of Zion, through ska and rocksteady, roots, riddims and dub, the story closes with the Reggae Revival, a new generation of Rastas as comfortable riding rhythms in a dancehall style as they are singing sweet melodies from times gone by.