Pharrell Williams is writing a children's book. You'll never guess what it's based on.

We apologize for getting “Happy” stuck in your head again. But Pharrell Williams is going to author four picture books — and the first will be based on this hit song. The books will be published by Putnam, a division of Penguin-Random House known for the “Where’s Spot?” series, reports the Associated Press. “Happy!” will be filled […]