Explore the fundamentals of harmony in Western music through this 50-minute lecture from Yale University's "Listening to Music" course. Delve into the formation of triads from scales, common harmonic progressions, and the concept of modulation. Develop critical listening skills to identify regular and irregular harmonic changes within musical phrases. Experience a diverse range of musical examples, from grand opera to bluegrass and 1960s American popular music, as you learn about chord construction, major and minor harmonies, and how modulation is achieved through harmonic shifts.