Taylor Swift releases behind-the-scenes footage from Fortnight music video – as collaborator Post Malone reveals his sweet nickname for her

aylor Swift gave fans a behind-the-scenes look at her creative process while making the Fortnight music video, which she wrote, directed and starred in.

On Friday, the pop star, 34, shared a nearly four-minute YouTube video containing unseen footage from her time on set working alongside collaborator Post Malone.

The recording begins with the Cruel Summer hitmaker throwing a metal cart at a two-way mirror in inside a mental institution with stark white walls.

Unlike in the official video, however, the cart ricochets back at her, instead of shattering the glass, like in the final cut.

After the cart falls to the floor, narrowly missing her face, the 14-time Grammy winner can be seen immediately bursting into laughter.

‘So we use the other one,’ she mused.

The billionaire, originally from West Reading, Pennsylvania, proceeds to explain that, in her mind, that the video is taking place in The Tortured Poets Department, which she describes as a ‘government municipal building where they study the behaviors and minds of poets.’

‘One of the stereotypical things about poets over the years is that the people said they were crazy,’ she explains, before watching a monitor of herself making an ‘unsettling’ face at the camera.

Later, she speaks about working with Post Malone and can be seen instructing him on how to use a typewriter.

For his scene, she explains to him that all he faces to do is type and when he says ‘look’ they both need to ‘look at each other.’

‘Almost like when you realize that you and the other person have the same thought in your head at the same time,’ Swift says.

‘Yes, ma’am,’ he tells her.

After he finishes, she pulls off her headphones and tells the rapper his performance was ‘stunning.’