A short film by Al Boardman, with music in the video by Andrea Baroni. It is just a bunch of animated geometric shapes set to music. Very simple, but very effective.
These gifs are taken from the video. They are quite enjoyable by themselves, but much better with the music.
From the page:
A short animation exploring shapes, colours and transitions.
Creative and animation: Al Boardman
Music: Andrea Baroni
Some more gifs from the video: alboardman.tumblr.com