In ‘You Have Not Yet Heard Your Favourite Song: How Streaming Changes Music’, out June 20, Glenn McDonald—Spotify’s former “Data Alchemist”—dives deep into how the digital age has redefined what music is, how it’s made, and how we find it. After analyzing the listening habits of 500 million people, McDonald reveals what tech giants know about you, how they serve your next song, whether fans can cheat the algorithm, and if ASMR really is the new punk. From the mystery of Norway’s russelåter to why Christmas music thrives in the Philippines, this book blends data with heart, uncovering what our music choices say about us. With 10 handpicked playlists and glowing praise from The Washington Post’s Joseph Menn and Daily Telegraph’s Neil McCormick, this is essential reading for anyone who’s ever hit “shuffle” and wondered what came next—and why.