system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: When you listen to music and you yawn, why is it that the pitch seems to change?
gpt
I would think its because when you yawn you open your Eustachian tube and allow the pressure to equalize in your ear, and the change in pressure causes the eardrum to vibrate slightly differently.

Edit: The Eustachian tube is a tube that connects the inside of your eardrum to your upper throat / back of your nose to allow the pressure inside your ear to change. So it doesn't explode / implode.