system
Given the following post, respond as if you're commenting on Reddit:
human
[Back to the Future] Who actually created Johnny B. Goode?

Marty goes back and plays it, having learned it from Chuck Berry. But...Marvin, Chuck's cousin, heard it and let Chuck listen to the "new sound."
gpt
Think of it this way. Chuck didn't hear the whole song, and what he did hear probably wasn't too high quality, coming through the phone and all.

So, Marty played the song, Chuck heard part of it, and that small part inspired him to write the full song, which Marty went on to play.