I’ve seen this for certain printers. One particular, the person managed to have the PACMAN tune play upon finishing a print job.
I have just one question though.
Why?
I mean seriously, the only way to achieve this would be to change the stepper motor movement(source of the noise) so that extraneous moves are interjected into the G-code.
Put simply, why would one:
a) Go through the trouble?
b) Create excess wear and tear on their machine?
c) Add more time to an already lengthy process of printing a model?
And to answer your question. I am unaware of anyone in the Bambu Community who has done this.
I guess everyone has to express themselves creatively and just like Picasso was once criticized for his use of water colors(real artists back in the day used oils) one can’t judge someone else creative muse if it provides enjoyment. 
Tetris on an Ender 3
Harry Potter, Star Wars, AC/DC, Jurassic Park on a Tevo Tarantula Pro
