Pharrell - 'Happy.' Written in: 1 Hour.
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10 Songs That You Won't Believe Were Written In Less Than A Day
3. Pharrell - 'Happy.' Written in: 1 Hour.
It's a song that earnt him a grammy-nomination, went to number one worldwide, and sparked the making of his second solo studio album, yet Pharrell's recent hit 'Happy' was written in in his own words; "an hour or so."