Ideas That Changed Western Music

The BBC offers up this list of 8.

  • Pythagoras creates the scale.
  • Notation is developed.
  • The piano enters the home.
  • The first recording.
  • The birth of public radio broadcasting.
  • The first chart is published.
  • The dawn of electronic music.
  • The invention of the Walkman.

A Top 10 list needs, according to my calculations, 2 more.  What would you add to the list?