The title of the thread should probably be changed, if possible, to songs specific to the 1989 album. And it should probably be changed so that it's not specific to Taylor Swift, but dance/pop songs in general at present.

Her more country-pop songs have plenty of melodic movement.

I'm not a big fan of any of her music, but have followed her music after one of the guys in the worship band I used to to do live sound engineering for gained huge internet fandom and eventually got a deal with Sony records, covering her songs at first and then writing his own. That guy is Tyler Ward.

She does have a real knack for writing pop tunes and with her success has access to Max Martin, who is the real machine behind dance pop stardom. I suspect he might have encouraged the mono-tone melodic lines prevalent in 1989, which the video hints at, but doesn't come out and say it. Whether it's part of the zeitgeist or not, as the video claims, that's kind of a stretch in my opinion.

Max Martin if from Sweden, and one could just as easily make the argument that the simplicity in the melodies Max writes is influenced by Scandinavian style and culture; which has for many decades been one focused on simplicity.

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