 To show how easy the new writing system was, Carrillo gave two New York elementary school boys, who had no prior knowledge of Sonido 13, a simple work by Bach to convert to his notation system.The boys accomplished the task in less than an hour, proving that the new writing method was easy to learn.The new writing system is not as graphic as the conventional staff or stave, and instead of calling the notes by a letter or a syllable (Do, Re, Mi, etc.)