The world and his grandma has seen the amazing video of Taylor Swift and Tom Hiddleston throwing some serious shapes together at the Met Gala Ball on Monday.
But how did this dream pairing come about? Tom has spilt the beans about the viral vid.
Tom admitted, "I would have put my own head through a wall at certain points I was so frustrated," as he struggled to get the crooner's voice right.
"I recorded Why Don't You Love Me in an hour, I don't know why it came so easily. It took me two weeks to record Lovesick Blues," he said.
He admitted the responsibility to play Hank right was "massive".
"It's like I've turned up in Liverpool and am going to play John Lennon. In Nashville, people have a very strong opinion about Hank Williams, he's revered as one of the godfathers of American music."
I Saw The Light is out in cinemas on May 6.