It used to be that music discovery happened between people. Friends would recommend new songs, DJs would play new bands, music writers would review new albums. And then, if something interested us enough, we’d go buy it. We’d listen to it. Over and over again. And if we fell in love with it, we’d recommend it to others. That’s how it went for a long time. Music discovery was this intentional, symbiotic relationship between music lovers and the music they loved.