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GDP - Laurie Taylor talks to Lorenzo Fioramonti, Professor of Political Economy at the University of Pretoria, and author of a new book which exposes the flaws of an economic system which values this statistic, above all others, as a measure of prosperity and growth. They're joined by Douglas McWilliams, Deputy Chairman of the Centre for Economics and Business Research. Also, Mali music - Caspar Melville, Lecturer in Global Creative and Cultural Industries at SOAS, discussed his study into the ways in which Eurocentric copyright is impacting on African musical traditions.

Producer: Jayne Egerton.