Notable from yesterday. What the actual fuck?

Loud speaker Audio at Nashville bombing played in reversed asks "Are You Having A Merry Christmas?"

—-

Download this youtube video

https://www.youtube.com/watch?v=IGfUTy3vX_I

Reverse it here

https://audiotrimmer.com/online-mp3-reverser/

https://vocaroo.com/1fbJaB9HT07G

^ audio has been isolated and cut down to just the one section

"ARE YOU HAVING A MERRY CHRISTMAS"

Can any anons help figure out what is happening here?