The number-one hit song Happy is now a picture book by Pharrell Williams, showcasing the lyrics and featuring colourful photos of children dancing—and being happy.

The song topped the charts in countries worldwide in 2014; now Williams is bringing it to the youngest of readers in photographs of children across cultures celebrating what it means to be happy.

The Campus Bookstore is featuring this irrepressible keepsake as its book of the week. Through November 8, purchase it for just $20. It is one of hundreds of children’s books available in the store, on the lower level of the CAW Student Centre.