When MTV first started making it's big splash in the music world, it was widely thought that radio (at that time) was on the doorstep of death. Since that time, we all have found that thinking to be erroneous. In addition to this proving out to be a fallacy, MTV has been relegated to to putting on sophomoric shows that I find to have little (if any at all) cultural value.
MTV premiered on August 1, 1981 at 12:01AM with this video, Video Killed The Radio Star by The Buggles:
As MTV progressed and gained in popularity, it's far-reaching influence inspired a well-known band known as Queen, to write a song that gave words of encouragement to what was then perceived to be a dying musical medium. Here is one of the last great performances with the late Freddie Mercury; it was at Live Aid in 1985, and titled Radio Ga Ga:
I was able to see Queen in 1982, before this song was released. They were pretty damned phenomenal, to say the least.