This is the music video for Sia's "Soon We'll Be Found." It uses sign language to tell a narrative and does so using about 3-4 different visual styles. But the core theme to keep them unified is the basic idea of sign language: using shapes (particularly the silhouette) in motion to convey thoughts and emotions. They really found great ways to capitalize on the silhouette and negative space, with the movements breathing life into them, to create a really beautiful video. This is what Sia said about it:
The movement and expression just appears, to ignorant-hearing-me as a dance… a beautiful, emotive dance. But the real beauty is that, hidden in these perfect shapes, is communication.Basically: It's pretty. I like the song too.