It seems ‘Happy’ singer Pharrell Williams has found something new to smile about. Billboard reports that the 41 year old has just inked a lucretive deal with publishers Putnam to pen four new books aimed at younger readers, starting with one inspired by his hit song ‘Happy’.

Pharrell WilliamsFrom pop star to author, Pharrell Williams

Happy, the book, will be published on September 22nd and it seems Putnam are already banking on it being just as successful as its namesake single, as a first edition print run of 250,000 copies has already been ordered. Inside, Happy, will feature photographs of children from around the world "celebrating what it means to be happy.”

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In a statement, Pharrell said, "I'm humbled by the global success of 'Happy,' but especially in awe of the song’s young fans. My collaboration with Penguin [Putnam's parent company] allows me to continue a dialogue with these children in a fresh, new way. We’re both committed to feeding the curiosity of young minds with imagination."

The single, which featured on the soundtrack of Despicable Me 2, became a huge hit for the singer, eventually topping the Hot 100 chart for 10 weeks in March 2013.

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Pharrell also earned an Oscar nomination for the track and picked up two Grammy awards, for Best Pop Solo Performance and Best Music Video. At this year’s Grammy ceremony he performed a different take on the single when he was joined by classical pianist Lang Lang for a dramatic performance of the hit.

Watch Pharrell perform 'Happy' at this year's Grammy awards: