A codex is a book from before the invention of the printing press. It’s written by hand and consists of a set of booklets that are sewn together.
2º ESO students have made a page of a codex using the typical writing for music in the Middle Ages: four lines instead of five and square notation.
Some of the material they have created are displayed on the blue board in the corridor.
The results are amazing. You have to see them for yourself!