Melody is the linear, horizontal dimension of music, while harmonic accompaniment is the vertical support provided by chords. A strong accompaniment clarifies the harmony, supports the melody's contour, and uses appropriate voice leading to create coherent, singable parts.
Take a simple melody and harmonize it using progressions learned in earlier units. Experiment with different voicings and spacing to find the most effective support for the melody.
A melody does not have to move in large leaps; the most memorable melodies often move stepwise with occasional leaps. The accompaniment should enhance, not compete with, the melody.
From your work on voice leading and harmonic progressions, you know how individual voices connect smoothly and how chord sequences create a sense of direction. Now we zoom out to the larger relationship between those elements: melody as the foreground voice the listener follows, and harmonic accompaniment as the background that gives it meaning and momentum. Think of melody as a figure and harmony as its ground — the melody only fully makes sense when we hear what harmonies support it.
A melody is a sequence of pitches moving through time, shaped by contour (rising and falling), rhythm, and phrase structure. Its power comes from tension and release: leaps create tension that stepwise motion can resolve; a long held note creates anticipation for what follows. But melody is never free-floating — even unaccompanied melodies imply harmonies. When you hear the opening of "Twinkle Twinkle Little Star," you immediately sense the I–V–I movement underneath it, even without accompaniment. The melody is built from chord tones and passing tones in a way that makes the harmony audible.
The accompaniment's job is to make those implied harmonies explicit, while staying in the background. Texture describes the relationship between melody and accompaniment: a melody with simple chordal support beneath it is homophony, the most common texture in popular, folk, and Classical music. The accompaniment must use what you know about voice leading — smooth connections between chord tones, avoiding parallel fifths and octaves — to create a coherent set of inner voices that don't distract from the melody. One classical approach is the Alberti bass, where instead of playing a chord all at once, the left hand arpeggios through the chord tones (low-high-middle-high), creating forward motion while filling the harmonic space. This keeps the accompaniment active but rhythmically distinct from the melody.
The most important judgment in writing accompaniment is harmonic rhythm: how often do the chords change? If chords change too quickly, the music feels frantic and the melody gets lost. If they change too slowly, the music stagnates. The melody's rhythmic activity usually suggests the right harmonic rhythm — fast melodic passages often sit over one sustained chord, while slower, more ceremonial melodies can accommodate more frequent changes. When the accompaniment and melody work together — when the chords support the melody's contour, when the harmonic rhythm matches the melodic phrase, when the voice leading is smooth — the result is a texture where the parts feel inevitable rather than assembled.
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