Easter Egg in the DOOM Eternal Main Menu Theme

I assume since my only story is DOOM related that a lot of people who follow me are DOOM fans. I want to point out the dopest thing I found out about the main theme of DOOM Eternal. (The OG theme, not the DLC 2 theme.) If you're on a computer with stereo or something with two speakers, listen to the theme now (Ideally past the 4:20 mark.) Now do it again, but this time with a phone or a device with one speaker. Enjoy the easter egg, I don't wanna spoil it.

This has been your DOOM fact of the day.