> ... Occasionally the screen went black when an employee at MTV inserted a tape into a VCR.[20] MTV's lower third graphics near the beginnings and ends of videos eventually used the recognizable Kabel typeface for about 25 years; but they varied on MTV's first day, speaking in a different typeface, and including details such as the song's year and record label.
https://en.wikipedia.org/wiki/MTV#Official_launch
None of that mattered though:
> MTV's effect was immediate. Within two months, record stores where MTV was available were selling music local radio stations were not playing, such as Men at Work, Bow Wow Wow and the Human League.[27] MTV also sparked the Second British Invasion, featuring existing videos by UK acts who had used the format for several years (for example, on BBC's Top of the Pops).