Have you ever wondered what it is that makes music sound sometimes rich and luxurious and sometimes strange and mysterious? Well, you’re in luck because this module, we’ll explore what the nature of simultaneous sounds and textures. We’ll start off with a look at chords, specifically how the three types of triads– tonic, dominant, subdominant– build a foundation upon which a melody can be constructed. Once we understand the rules of musical syntax, we’ll be ready to learn about musical progressions including the three types of cadences.We’ll also look at major and minor triads and how they work. Then, we’ll learn how to hear the bass and focus on the harmony of a song. Finally, I’ll talk you through the four families of musical instruments–brasses, percussions, strings, and woodwinds---and the various musical textures, forms, and styles that they can create. How exciting!