[VAXman(Admin)]

I voted "other". The transistor as employed in the transistor radio changed they way people heard music. They were cheap and portable. No longer did people have to sit around in the parlor listening to the old radio behemouth in the corner. It also helped to segregate the listening audience. The kids no longer had to listen to what mom and dad programmed on the dial. It also enabled the advent of the portable music device too. Once this happened, the radio stations could tailor their playlists to audience demographics and thus, it enabled audiences to experience a broader and more diversified world of music. Take a look at when the modern music industry exploded on the scene... just about the same time as the transistor radio.

FWIW, the transistor is probably, if not, the most inportant invention of the 20th century too... our lives have been forever altered by it.