Sources

For Competition Post

http://www.businessinsider.com/pandora-vs-spotify-total-subscribers-chart-2017-6

http://fortune.com/2017/01/21/tidal-subscriber-number-inflation/

https://www.fool.com/investing/2017/09/28/apple-music-subscribers-climb-to-30-million.aspx

http://fortune.com/2017/07/27/google-play-music-youtube-red/

https://www.geekwire.com/2015/chart-apple-music-vs-spotify-pandora-rhapsody-and-the-rest-of-the-streaming-competition/

For Audience Analysis Post

http://www.adweek.com/brand-marketing/infographic-what-marketers-need-know-about-millennials-music-habits-170869/

https://www.statista.com/statistics/475821/spotify-users-age-usa/

For UI/UX/IA Post

http://www.medium.com/@christabelpng/a-ux-redesign-of-spotify-ca2a305ac973

https://open.spotify.com/browse/discover

For Hype Cycle Post

http://www.businessinsider.com/pandora-vs-spotify-total-subscribers-chart-2017-6

https://blogs.wsj.com/cio/2017/08/15/making-sense-of-the-emerging-technology-pipeline/

https://slidehunter.com/powerpoint-templates/gartner-hype-curve-template-powerpoint/

https://www.sec.gov/Archives/edgar/data/1639920/000119312518063434/d494294df1.htm#rom494294_5