On Reflections we meet neuroscientist, Dr. Alan Harvey, Emeritus Professor at the University of Western Australia. His particular passion for music has led him to research the role of music in human evolution, which is the subject of his recently published book, Music, Evolution and the Harmony of Souls. You can hear him in conversation with Loretto Perkins as he talks about how music is processed in the brain and the importance of music as a means of communication and social interaction. (Interview first broadcast on 10 June 2018).