Dion Lewis was trying to make the best out of a difficult situation. Last August, when a storm left his Chicago neighborhood without electricity for a week, he improvised. Lewis had recently created a YouTube page for tutorials about the various aspects of computer programming called Code Pioneers, and that first night, unable to record, he decided to gather his wife and daughter for some quality time. Together in their living room surrounded by flickering candles, the three of them sat listening to songs Lewis “previously downloaded to use as background music” in his video tutorials. They included tracks like RalphReal’s “Mix It Up” and “Wallflowers” by the Portland experimentalist musician Bad Snacks.