https://news.sky.com/story/hello-adele-makes-142m-in-one-world-tour-11239854
https://www.bloomberg.com/news/articles/2018-01-03/youtube-s-unlikely-peacemaker-has-a-plan-to-make-musicians-rich
http://www.businesstimes.com.sg/life-culture/music-sales-soar-in-us-as-streaming-takes-over-market?platform=hootsuite
https://www-telegraph-co-uk.cdn.ampproject.org/c/www.telegraph.co.uk/business/2018/01/03/streaming-surge-electrifies-music-industry/amp/
http://www.straitstimes.com/lifestyle/entertainment/veteran-male-rocknroll-acts-had-biggest-2017-world-tours?xtor=CS3-20
https://www.bloomberg.com/news/articles/2017-12-07/youtube-is-said-to-plan-new-music-subscription-service-for-march
https://www.bloomberg.com/news/articles/2017-12-08/-uptown-funk-among-hits-acquired-by-kobalt-in-150-million-deal