My toddler is absolutely obsessed with the "Happy" song. Did you know there's a 24-hour "Happy" music video? Neither did I, until my son randomly heard Happy on the radio and began insisting we listen to it all day, every day. Seriously, we play the 24-hour music video every waking moment of every day. I now tell time in Pharrell Hours (at the top of every hour of the music video, Pharrell is on). I've forgotten what other music sounds like. It's my son's favorite everything: song, show, color, food, animal--If you ask him what his favorite of any of these is, the answer is Happy. Always Happy. And he hasn't even seen Despicable Me 2.Anyway, if you have a toddler as obsessed with Happy as mine, this book is a must. Now we not only listen to Happy on repeat even minute of the day, we also read the book version anywhere from 10-75 times per day. The lyrics of the song are written in fun, bold letters on the pages, and there are pictures of cute kids in festive outfits. We discuss the lyrics (well of course) plus what the kids are doing and wearing. This book is also a good way to learn the lyrics of the song (although not as good as listening to the song on repeat until it's burned into your brain).