Glenn McDonald spent over a decade with a very mysterious and specific job title: data alchemist at Spotify. It's possible – even likely – that no one on earth knows as much about music streaming. He is in New Zealand for the Going Global music industry conference, and joins Duncan Greive to talk about how Spotify does and doesn't work for artists, why Spotify doesn't stretch your listening habits, and what he really thinks about its big move into podcasting and audiobooks.

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