Presenting what might be the song of the universe:

Kudos to a fun idea and nice execution.

Update: I did a little digging over lunch and found that Lars Erickson is the gentlemen who wrote "Pi Symphony". Here's his video:

The top video was down for a while. In the comments to the second one, Lars addresses the fact that he sent a take down notice for the top video, saying: "Hey, I contacted him, but when people were referencing my work in his comments, he blocked their accounts. I am not trying to suppress the melody of pi, just someone taking credit for coming up with it this year when I did it 19 years ago. I completely understand, and hate doing it."

In case the top video goes down again, here's another Pi related thing to watch: