Just Northern Downpour

Something cool just happened. So "Northern Downpour" by Panic! At the Disco has been on repeat for almost an hour now, but I was using earphones. People talk to me once in a while so I have to remove the earphones, while leaving the song playing in the background even though I can not hear it. After a few minutes, I sang the line "Hey moon, don't you ever go down" while trying to wear the earphones again and as I sang, I heard that the lyrics synced to what was playing. It was amazing. lol What are the chances?