Singer's 'Happy' book to be published October 6

Pharrell Williams is set to publish his 'Happy' book for children on October 6, 2015.

Based on the singer's Oscar-nominated song of same name, 'Happy' will feature photographs of children across countries and cultures.

'Happy has gathered 63 million views on YouTube, and is one of the world's bestselling singles.

The upcoming book has been bought by Penguin Radom House.