- 
  
  thomas edison made the frist phonograph
- 
  
  launch to company to produce recording playback machines
- 
  
  disc phonograph
- 
  
  
- 
  
  The Audio Cassettes and 8-tracks were created
- 
  
  sony developed the frist digital recording devices used in professional studios
- 
  
  apple ipod intoduced
- 
  
  apple iphone introduced