Taylor Swift has revealed the name of her forthcoming album's closing track - 'Mastermind'.

At the stroke of midnight last night, Swift posted a TikTok for fans, revealing a new series - 'Midnights Mayhem With Me'.

Sat next to a gold lottery ball cage, containing ping pong balls labeled 1 - 13 (representative of songs from her forthcoming album), the singer revealed she would be using fate to reveal the track name of one of her new songs from Midnights.

"I know I have a habit of dropping cryptic clues and easter eggs when giving you information about new music, and I’m not here to deny that, but I am here to defy that," Swift says, introducing the clip. "Welcome to a new series I’m calling ‘Midnights Mayhem With Me.’ I am going to be using this technologically advanced device to help me allow fate to decide exactly what track titles I’m going to be announcing and in what order."

Proceeding to draw the first ball from the cage, it just so happens to be number 13 - Swift's lucky number.

"The first track I’m going to tell you about is Track 13, because of course," the singer smirks, as she picks up a red corded phone and reveals: “Track 13 is called ‘Mastermind'.”

Revealing more than usual for TSwift, it has yet to be seen if this series will become a regular occurrence and more track names will be announced, or if that's enough for the ever-so-secretive pop-star.

Check out the video captioned: “Midnights tracklist reveal!! Introducing: Midnights Mayhem with Me," below.

@taylorswift Midnights tracklist reveal!! Introducing: Midnights Mayhem with Me 🌌😎 #TSmidnighTS #SwiftTok #MidnightsMayhemWithMe ♬ original sound - Taylor Swift