This document provides an overview of several popular music channels, including MTV, VH1, The Box, 4Music, and Kerrang!TV. It discusses the origins and ownership of each channel, when they launched, their original programming focus and how some have diversified over time to include more reality TV shows and reduce music video playback. For example, it notes that MTV and VH1 have decreased music video airtime to only a few hours a day as they added more general entertainment programs.