1900 - Thomas Edison invents the gramophone. This was the first step from live music to recorded audio.
1927 - The Jazz Singer (Alan Crosland) was in the first film which wasn't a silent movie. The film included sound for the first time. It was also half musical.
The 1940s was also the peak period of MGMs Hollywood musicals
1954 - Elvis Presley records That's All Right and becomes a sex symbol in the music industry.
1963 - UK's first music TV programme, Ready Steady Go.
1964 - The second UK's TV programme Top of the Pops begins.
The Beatles release the film and album A Hard Day's Night
1983 - Micheal Jackson's Thriller becomes the longest music video with a length of 16 minutes.
1984 - MTV Music Video Awards start taking place.
1987 - MTV Europe is launched which is broadcasted to 1.6 million homes.
1990 - MTV Unplugged lauches.
1994 - MTV launches the MTV Europe Music Awards.
1997 - MTV UK and Ireland launch their own independent channel.
2001 - Launch of MTV Dance. First music channel dedicated for dance only.
2005 - Lauch of YouTube.
iTunes allows users purchase and download music videos. The number of downloads go to 1 million after 20 days of being released.
2010 - All Lady Gaga's music videos reach 1 billon views alltogether.
Vevo is launched on YouTube which is dedicated for music videos only.
2012 - South Korean artist PSY, breaks YouTube record and becomes the first to reach 1 billion views with 'Gangnam Style'.
2013 - YouTube has 60 hours of videos being uploaded every minute. 4 billion videos are being viewed everyday.
2014 - PSY breaks another record. 'Gangnam Style' is the first video to reach 2 billion views.