Music channels

With music channels there seems to be a large part of the sector dominated by MTV an american music channel, it consits of multiple sub channels which aim specifically on a certain genre eg MTV HITS MTV ROCKS MTV CLASSIC, whereas other music channels dont seem to have the ability to branch out past once channel, this can be seen with ones like VIVA  which is pop , capital tv a televised version of the radio show ( pop / indie depending on the DJ). 4 music seems to be a contender however i would say it is only realy at its peak during the festivals by its sister channel E4. Most large radio shows also televise their radio shows only using a blank image however, some do have video but rarely.

There also seems to be a small group of music channels which work on requests.