04. Keys and Harmony

📁 Peterson Academy Introduction to Music Theory with Samuel Andreyev 🎬 04/08. Keys and Harmony In lecture four, we learn more advanced concepts of Western music theory, including key signatures, circle of fifths and chord construction, showing how these elements enable harmonic movement and musical storytelling. We examine how keys center around tonic notes, how circle of fifths links keys, and how triads form basic harmonic units that can be inverted and altered to create major, minor, augmented and diminished qualities. Lecture also introduces harmonic functions and chord progressions, explaining how they generate tension and resolution, allowing composers to craft musical narratives from simple three-chord patterns to complex symphonic movements. Timecodes: 00:00 - Introduction 01:10 - Parallel Keys 01:47 - Role of Tonality in Music 02:44 - Harmonic Motion 04:54 - Transition Between Keys 05:58 - Circle of Fifth 09:12 - Key Signs & Sharps 13:47 - Flats Order 16:32 - Playing in Different Keys 17:42 - Memorizing Keys 18:18 - Keys & Modulations 19:58 - Chord Definition 21:37 - Triad as Fundamental Unit 23:58 - Sequence of Triads 25:19 - Inversions of Triads 28:41 - Changing Quality of Triads 32:03 - Combinatorial Explosion 34:34 - Other Types of Chords 36:20 - Harmonic Functions 39:40 - Role of Tonics & Dominants 41:41 - Archetypal History in Music 44:06 - Other Stages of Scale 46:28 - Chord Progressions 49:48 - Music as Human Experience 51:15 - Romanticism & Expressionism...