MTV (formerly an initialism of Music Television) is an American basic cable and satellite television channel which is a part of the “Viacom Music and Entertainment Group” unit of the Viacom Media Networks division of Viacom, of which it is a subsidiary. The channel itself is headquartered in New York City. Launched on August 1, 1981, the original purpose of the channel was to play music videos guided by television personalities known as “video jockeys,” or VJs. The network’s current target audience is teenagers and young adults, with programming consisting mainly of original reality, comedy and drama programming and some off-network syndicated programs and films, along with limited music video programming in off-peak time periods. In its early years, MTV’s main target demographic were young adults, but today, MTV’s programming is primarily targeted at teenagers, high school students and college-aged students.