Hello,
I am new in this, but i have a question for everybody: The puzzle creator was fan of Freddie Mercury?
I discovered a patern that is matching a song of Freddie Mercury.
They may laugh at your theory now! But I agree with what you said to some extent, and not necessarily the melody or note of the music, but rather the beat or rhythm of the hex number of the puzzle keys, and it just needs to be understood and analyzed.