Lorde - 'Royals.' Written in: 30 Minutes.
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10 Songs That You Won't Believe Were Written In Less Than A Day
9. Lorde - 'Royals.' Written in: 30 Minutes.
This song of 2013 - it literally won Grammy for Song of the Year - was written in just 30 minutes by a 15-year-old Lorde. She originally thought about giving the track away to another artist - bet she's happy she decided against that one!