MTV

The original purpose of MTV was to be "Music Television," playing music videos 24 hours a day, 7 days a week, guided by on-air personalities known as VJs, or video jockeys. The original taglines of the channel were "You'll never look at music the same way again," and "On cable. In stereo." Although the concept of playing music videos 24/7 has long been abandoned, MTV US still promotes and plays a limited selection of music videos on its TV channel and website.
Internationally, the station continues to support a broad selection of music including 4 channels in the UK that broadcast 23 hours of music video per day.
According to The Austin Chronicle, Jackson's video for the song "Billie Jean" was "the video that broke the color barrier, even though the channel itself was responsible for erecting that barrier in the first place. After airing Jackson's music videos, MTV, then a struggling cable channel, became very popular. Jackson's videos were credited for this success and MTV's focus switched from rock to pop and R&B. This move helped other black artists such as Prince, Whitney Houston and Janet Jackson break into heavy rotation on the channel. Jonathan Cohen of Billboard magazine commented Janet Jackson's "accessible sound and spectacularly choreographed videos were irresistible to MTV, and helped the channel evolve from rock programming to a broader, beat-driven musical mix.
The first music video shown on MTV was "Video Killed the Radio Star" by The Buggles. The second video shown was Pat Benatar's "You Better Run." Sporadically, the screen would go black when an employee at MTV inserted a tape into a VCR. Video of the launch of MTV was uploaded onto YouTube in 2009, with the original commercials, and the "black screens" between videos. The "MTV lettering" differed on its first day, and included record label information like year and label name.
At one time, MTV had a profound impact on the music industry and popular culture. Slogans such as "I want my MTV" and "MTV is here" became embedded in public thought, the concept of the VJ was popularized, the idea of a dedicated video-based outlet for music was introduced, and both artists and fans found a central location for music events, news, and promotion. MTV has also been referenced countless times in popular culture by musicians, other TV channels and shows, films, and books.
MTV has spawned numerous sister channels in the U.S. and affiliated channels internationally, some of which, like the former MTV Tempo now known as TEMPO Networks, have gone independent. MTV's moral influence on young people, including issues related to censorship and social activism, has been a subject of debate for years. MTV's choice to focus on non-music programming has also been contested relentlessly since the 1990s, demonstrating the channel's previous impact on popular culture.