Definition: Pitch-Class Set is used in Music theory to describe how music is organized—Melody, Harmony, Rhythm, form, and interaction between parts.
- Where it’s used: Composition, arranging, improvisation, and analysis.
- Why it matters: it helps you predict what sounds “stable” vs “tense,” and how progressions and rhythms create motion.
- Practical takeaway: apply it by writing a short 8–16 bar idea, then analyze what makes it feel resolved or unresolved.