Taylor Swift Knew You Couldn't Avoid Dancing to 'Shake It Off'

Music video for Taylor Swift's "Shake It Off" single released August 18, 2014.

Taylor Swift didn't head into the studio with producers Max Martin and Shellback knowing what "Shake It Off" would sound like, but she did know what she wanted it to feel like. 

Speaking with Grammy Pro, the pop star explained the attitude behind her massive 1989 hit. 

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"1989 was essentially a celebration," she said. "I changed every part of my life. I focused every part of my life on different things than I'd focused it on before. I had new adventures and everything. And I kinda stopped caring. Like, I'm very well aware of what everyone says about me -- every single thing -- and the difference between now and three years ago is I honestly don't care anymore. And life is much better that way. I kinda wanted to write something that sounded like how I feel about all that."

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She continued, describing her entering her writing session with the super producers, explaining to them she had some lyrics and knew the vibe she wanted, saying "I want it to start off and the second the song starts, I want it to be the song where, like, if it's played at a wedding and there's this one girl who hasn't danced all night at the reception, all her friends come over to her and they're like, 'You have to dance! Come on! You have to dance on this one!' That's what I wanted."

As anyone who's heard the song can attest, mission accomplished. 

Watch the full interview here: