Remember the old wives tale which states that if you played certain Beatles songs backwards you'd hear a personalised message from the devil himself hidden in the music? We never quite believed that Satan would choose pop music to communicate his message to the masses but after hearing Taylor Swift slowed down we're completely prepared to re-evaluate our opinion on that.

A YouTuber by the name of Mark Blackwell has won the internet today after slowing down Taylor Swift's recent performance of 'Shake It Off' on Jimmy Kimmel Live to within an inch of its life - and the results are pretty unsettling, to say the least.

Have a listen to Taylor Swift: Queen of the Underworld above...but just don't blame us for the ensuing nightmares.

(via Mashable)