Atari also got into the act with the Graduate. For $79 you got 8K of RAM and a membrane keyboard. There was a big public relations push including a very period TV commercial you can see in the video.

[rossumur]’s first computer was an Atari 400, and after riding a wave of nostalgia and forgetting the horrible keyboard found in the Atari 400, he decided it was time to miniaturize the ...

Which brings us nicely to 1990, when MIDI music-making was established enough to warrant an appearance on BBC 2 - at the time ...