Research into music channels

MTV
Hours devoted to music videos per day on average
2000 - 8 hours
2008 - 3 hours
The concept of a music channel has been around for a long time, where major record companies began supplying broadcasters with promotional clips of upcoming music. HBO also had a 30 minute program of music videos, HBO would occasionally play a few music videos between movies.

As popularity rose, and record companies realised the potential of the medium to gain promotion, they began to create longer clips specifically for the channel.
A number of bands and performers in 1980s were made popular by MTV. Such acts ranged from new wave to hard rock such as Adam Ant , and Culture Club.
During the 1990s, the channel began Dial MTV, a daily top ten music video countdown show where viewers could request a music video.

Also during the 1990s, MTV was playing a concoction of pop-friendly hard rock acts, such as such as Michael Jackson, Madonna and New kids on the block.
By 1997, MTV began introducing electronica dance acts. Some of the more popular artists were The prodigy and Fatboy slim.

However, in late 1997, MTV began shifting to pop music, inspired by the success of the Spice Girls and the rise of boy bands

(infomation sourced from Wikipedia)