The 27-year-old singer released the fourth single from her upcoming LP 'Reputation' on Friday (03.11.17), and at the weekend, the producer and songwriter - who has worked with Taylor on a number of occasions - behind the song took to social media to share some insight into the track.
On Twitter, Jack, 33, wrote: ''honored to have call it what you want out in the world. that song means a great deal to me.
''made with an MPC, live kick, dx7 strings and samples of taylor's voice as the intro and throughout. love making her voice into an instrument
''pls listen on headphones at night on a walk (sic)''
It isn't the first time Jack has worked on one of the tracks from 'Reputation', as he previously lent a hand for the album's lead single 'Look What You Made Me Do'.
Jack also collaborated with Taylor for 'Out of the Woods', 'I Wish You Would', and 'You Are In Love', which all feature on her 2014 album '1989', as well as being the co-writer on Taylor's duet with Zayn Malik, 'I Don't Wanna Live Forever'.
Meanwhile, Taylor previously took to Twitter in the hours before 'Call It What You Want' was released to tease some of the song's lyrics.
She shared a picture with the words: ''Holding my breath/ Slowly I said/ You Don't Need To Save Me ... But would you run away with me? ... Yes.''
And she then captioned the post: ''Call It What You Want. Midnight Eastern. (sic)''
So far, Taylor has also released the tracks 'Ready For It?' and 'Gorgeous' from her sixth studio LP, which is due to hit shelves on Friday (10.11.17).
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