>noone brought up this
https://www.youtube.com/watch?v=UrLK4Skrz0s
This short movie was supposed to be an actual full-length musical movie called Larkins that was scheduled to come out on February 16, 2018 by DreamWorks. However, the movie was outright cancelled after Universal bought the company. The directors hoped to sell the movie to other companies, but none were ever interested in it.

Three animators that worked on it ended up retooling the movie as a simple 8-minute short using the studio's newly introduced in-house rendering engine known as MoonRay that would also be used for the third How to Train Your Dragon movie