Music Theory and Composition

Music theory is the systematic language of musical structure: melody, harmony, rhythm, form, and orchestration. Composition is the art and craft of writing original music, using theory as the foundation. Together they enable you to analyze great works, write convincingly in any style, and communicate musical ideas clearly to performers and listeners. Music theory is the framework for understanding how music works: how intervals and chords relate, how melodies and harmonies interact, how keys and modulation build narrative tension, and how large-scale form (sonata, rondo, theme and variations) organizes a piece. Composition is the creative application of theory—writing a melody, harmonizing it, developing it through modulation and variation, orchestrating it for instruments, and shaping it into a coherent, expressive work. A composer might write a pop song (simple form, catchy melody, modern harmony), a symphony (complex sonata form, classical key relations), a film score (functional music that serves dramatic intent), or a game soundtrack (looping, responsive to player state).