Taylor Swift said she decided to go pure pop on her last album in an effort to keep things fresh.

The US star initially entered the scene in the 2000s with country undertones.

However, her 2014 effort '1989' saw Swift go wholly pop and she told the Tonight Show that she changed her sound to keep things exciting.

She said: "[The label] were very comfortable with what we had been doing because things had been going well.

"Making my last album was sort of a hybrid between country and pop. I just thought there's no way you can keep doing the same thing over and over again and it's got to be exciting to you or exciting for fans.

"You have to change things up and some people in my team were like, 'This is a great album. We love it. These songs are incredible; this is the best work you've ever done. Can you put three country songs on it please?'"

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