‘The Angry Birds Movie’ arrives in May, but as a little holiday treat, the movie has unveiled the adorable not-so-angry Hatchlings as they attempt to sing ‘Deck The Halls’ in this little video.

From the sound of it, it may have been improved by real kids and animated to fit what happened when they were supposed to be recording the song.

Check it out below:

‘The Angry Birds Movie’ is of course based on the hugely popular phone ap.  How popular is it?  It has been downloaded over two billion times!  And it has been responsible for eating up a hundred times that, in terms of hours played.

The film is directed by two first-timers Fergal Reilly and Clay Kaytis.  Reilly previously worked on ‘Spider-Man 2’, ‘The Iron Giant’ and ‘Hotel Transylvania’.  Kaytis has contributed to ‘Wreck-It Ralph’, ‘Frozen’ and ‘Tangled’.  The movie was penned by Joe Vitti who has worked on ‘The Simpsons’, ‘The Simpsons Movie’, The Office’, the two ‘Alvin and the Chipmunks’ movies.

The movie features an all-star list of voice actors including Jason Sudeikis, Josh Gad and Danny McBride as the three main Birds.  Joining them are Peter Dinklage, Bill Hader, Maya Rudolph, Keegan-Michael Key, Kate McKinnon, Tony Hale, Ike Barinholtz, Hannibal Buress, Cristela Alonzo, Jillian Bell, Danielle Brooks, Romeo Santos and YouTubers Smosh a.k.a. Ian Andrew Hecox and Anthony Padilla.

Producer John Cohen promises that the movie will clarify the conflict between the birds and piggies in the game.

“The question Rovio gets more than anything is ‘Why are these birds so angry?’ This is the origin story for how that ­conflict came to exist between birds and little green piggies.”

Can the Angry Birds become the next ‘LEGO Movie’? That remains to be seen, but like LEGO, ‘Angry Birds’ has a broad appeal to kids as well as adults. And with the talent behind it, this may be the spring’s surprise hit.

‘The Angry Birds Movie’ opens on May 20, 2016.