This is a video created by two people (not the dancers in the video) about what they got out of a song by the band Alabama Shakes.
They were inspired by the song and created a video. Apparently there was a contest by the band that fans could participate by creating an official video.
This didn't win.
What do you do when you create something good, with good intent?
That could be considered to violate copyright?
You hold your breath and hope for the best. I don't know how long this video will be up.
Can you have an official and permitted unofficial version of a work?
We are about to find out.