Music has been a universal language, capable of evoking emotions and bringing people together, for centuries. Despite its importance, music theory and appreciation can often seem daunting and complex, leading many to feel intimidated or discouraged from exploring the world of music. The apostila "Descomplicando a Música" (Simplifying Music Workbook) aims to change this by providing a straightforward and accessible approach to understanding music. This paper will discuss the importance of simplifying music theory and appreciation, and how the "Descomplicando a Música" apostila achieves this goal.