Glenn McDonald is a music evangelist, algorithm designer, software engineer and technology strategist. He created the music-exploration website Every Noise at Once, and for 12 years was the Data Alchemist at the Echo Nest and Spotify. He has written about music online since before “blog” was a word, and his first offline book, You Have Not Yet Heard Your Favourite Song: How Streaming Changes Music, is available from Bombay Circle Press. Currently he is working for an AI startup to try to figure out how to build systems that improve human lives instead of simply consolidating money and power.