system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: For those that remember VHS and audiocassette tapes - I think I understand how you can get pictures on a tape of plastic, but how the heck did they get sound on there? How is it audible?
gpt
I think you have the wrong idea of how they get images on the tape.

There is nothing on there that resembles an image to the human eye (not even outside of the visible light spectrum) it's nothing like the reels they use in cinemas. 

The VHS tape is magnetic, kind of like hard drives (except VHS is analog and not digital). So you store stuff on there by magnetizing the tape in a certain way. 

You can do the same thing with audio.