The book Pharrell Williams announced he would be releasing on Wednesday (23Apr14) has hit the Internet unfinished, because the hitmaker wants fans to help him complete it.

The Happy hitmaker launched his new "social book", titled Inspiration, on Thursday (24Apr14), but early readers discovered there are words missing from every page.

Williams wants fans to fill in the blanks for the chance to get a credit in the finished publication.

The first four pages were unlocked on Thursday, with more to come in the future.

Once all the blanks are filled in, the book will be printed, published and sold, with all proceeds going to From One Hand to AnOther, an organisation founded by Williams which supports at-risk youths.