Behind the music: Shorewood High School's newest lip dub (VIDEO)

SEATTLE -- The last time Shorewood High School in Shoreline posted a ‘lip dub’ video, the post quickly racked up more than 2 million views!

Five years later, they are at it again- and this time, they used a student-built drone to film it!

The leadership and video production classes joined together to helm the project, which ultimately showcased the entire school.

But here’s the thing: they recorded the video while lip dubbing the song...backwards.  Kaci Aitchison went behind the scenes to find out how they did it.

Watch the entire video here.