Ivan Hewett explores the origins and evolution of music. The urge to make music is rooted deep in human nature, but why that urge arose in the first place is a hotly debated question that divides the scientific community. Ivan Hewett goes in search of the answer, drawing on a fascinating body of evidence that ranges from Palaeolithic cave settlements and observations of apes making music, to laboratory studies of infants' musical abilities, and a new brain-scanning experiment to map the neural basis of the music faculty.