Inside the Playlist Factory

As streaming has gone mainstream, these curators, many of whom began their professional lives as bloggers and DJs, have amassed unusual influence. Their work, as a rule, is uncredited — the better for services designed to feel like magic — but their reach is increasingly unavoidable. Spotify says 50% of its more than 100 million users globally are listening to its human-curated playlists (not counting those in the popular, algorithmically personalized "Discover Weekly"), which cumulatively generate more than a billion plays per week. According to an industry estimate, 1 out of every 5 plays across all streaming services today happens inside of a playlist. And that number, fueled by prolific experts, is growing steadily. [slBuzzfeed]