‘Headphone listening—the act of playing a highly personalized soundtrack wherever we go—is a surprisingly radical invention, and we’re only beginning to contend with its implications. The visible barrier it creates between the listener and everyone else is obvious. Less obvious is the invisible barrier: The more time we spend in our own musical echo chambers, the less likely we are to share a collective cultural experience. The power of music has long been its ability to soundtrack a generation—to evoke emotion, as well as summon a specific time and place. Headphone listening not only isolates the listener; it shrinks music’s cultural footprint. …’ (Jonathan Garrett via The Atlantic)