Setting the scene
Before the Walkman, portable audio often meant bulky transistor radios or shoulder-slung boomboxes built for groups. Sony's bet was that some listeners wanted isolation and politeness: a device you could carry without imposing your taste on a whole subway car.
What happened
Early marketing leaned on youth lifestyle photography and the novelty of dual headphone jacks on some models for shared listening. Cassette duplication also meant teenagers could curate mixtapes, accelerating music discovery outside radio gatekeepers.
Why it still matters
The product name became genericized in language the way 'Google' later would for search. Memorable detail: early press sometimes mocked the idea as antisocial, the same critique that would follow white earbuds a generation later.
Background
The Walkman changed expectations about where music lived—commutes, jogging, study halls—and previewed arguments later replayed with MP3 players and phones.