This is a stereogram video.
If you watch it properly, you will see the notes in a virtual 3D.
Start the video in full-screen mode. When it has faded in, pause the video. Adjust your vision until you see in 3D. Play the video and enjoy the show.
If you don't know how to watch a stereogram, here is the explanation.
I also have a 3D message for you.
Again, start in full-screen mode and pause when the video has faded in. Focus for a 3D view. You will see an "X". Play the video and the letters will spell the message.