(I chose this song as a joke, I don't actually like it lol)

This is Friday by Rebecca Black played using note blocks but with a different twist. Instead of making one long trail of note blocks I made it so the notes could be shown on a piano-like thing. This made it much more complicated than I expected as the redstone paths had to go around each other to reach the piano notes. I could have made it smaller if I had planned well beforehand, and it's only huge because I didn't.

The occasional slight lag in the notes is due to many redstone currents being continuously switched on and off at the same time.