For the Generation X, people might only rely on buying the musical record CD for entertainment in order to show their support to their idols. Vary from Generation X, Millennials are able and willing to make more consumption on the commodity of music industry through Internet (e.g. iTunes) easily nowadays.
Live performance of Lady Gaga
References - Digital Music News, 2017 http://www.digitalmusicnews.com/2016/06/02/millennials-listen-more-music-baby-boomers/
Ways of entertainment
Furthermore, different generations have their own way of entertainment. For Millennials, they are not limited to the traditional means of music consumption anymore (Billboard, 2017). Millennials drift apart from buying physical CD or listening to traditional AM/FM radio and replace by visiting network with their digital devices, for instance, using Spotify, YouTube and iTunes app (Music week, 2017).
References - Music week, 2017 http://www.musicweek.com/digital/read/millennials-consumption-patterns-show-massive-embrace-of-streaming-in-us/065324