The document traces the evolution of digital music from compact discs to streaming services. It discusses how compact disc players became mainstream in 1982 but were disrupted by the rise of personal computers and the Internet in the 1990s. MP3 players like the iPod began gaining widespread adoption in the early 2000s. Digital music sales have declined as consumers shift to streaming models provided by services like Spotify and Pandora. The document predicts that digital music consumption will continue moving to an "access model" rather than a purchase model, culminating in the development of a hypothetical "Celestial Jukebox" streaming service.

2. 1982 The Compact Disc Player - $900

3. Supervening Social Necessity PCs and the Internet 1990s New-market disruption

4. 2001 MP3 Players begin to go mainstream “ 47% of all adults 18+ own an iPod or another type of MP3 player.” (Zukuhr, 2011, p.11)

5. Digital Music Sales = 

6. "We're switching to an access model from a purchase model." - Joshua Friedlander, V.P. of Research at RIAA Consuming Music Differently

7. What ’ s Ahead? The Celestial Jukebox

8. References Text Christensen, CM., & Anthony, SD. (2004). Seeing what's next: using the theories of innovation to predict industry change . Boston, MA: Harvard Business School Press. Goldman, D. (2010). Music's lost decade: sales cut in half . United States: CNN . McMillan, G. (2011). Study: more people watch music on youtube than download it. United States: Time . Winston, B. (1998). Media technology and society. New York, NY: Routledge. Zickuhr, K. (2011). Generations and their gadgets. United States: Pew Internet & American Life Project . Imagery Amazon.com. (2011). Retrieved May 2011 from https:// www.amazon.com / gp / dmusic /mp3/player Fraites, C. (2009, March 7). Retrieved May 2011 from http://www.flickr.com/photos/kattanapilot/3337483694/in/photostream/ Google, Inc. (2011). Retrieved May 2011 from http://music.google.com/ Grooveshark, Inc. (2011). Retrieved May 2011 from http://grooveshark.com Herve, M. (2008, January 2). Retrieved May 2011 from http:// www.flickr.com /photos/ michelhrv /2331290109/ MP3tunes. (2011). Retrieved May 2011 from http://www.mp3tunes.com/ Nagl, J. (2009, February 28). Retrieved May 2011 from http:// www.flickr.com /photos/ jonnagl /3331431048 National Film and Sound Archive Australia. (2010, May 4). Retrieved May 2011 from http://www.flickr.com/photos/nfsa/4580700582/ Pandora, Inc. (2011). Retrieved May 2011 from http://pandora.com