Contrapuntal Arranging

Each line stands alone, and together they still make audible harmony.

Related

CounterpointFugueInvertible CounterpointBaroque

Contrapuntal arranging does not mean stacking two melodies. It means making each line stand on its own while the combination still reveals harmony. It suits a passage that needs intellectual bite.

The problem

If both lines are full, the listener hears rhythm rather than counterpoint. Ask whether each line can be sung without the other before combining them.

Texture or frequency band

Place the lines in different registers and offset their rhythms, one moving while the other rests, one rising while the other falls. With three or more parts, the middle is most likely to blur, so give it long notes or the tail of an imitation. Leave a register gap for recognition.

Approach and judgement

Write one complete main line, then a contrary or oblique line that can be sung alone. Build relationships through imitation, inversion and augmentation, but provide a clear cadence every four bars. If both lines are densely syncopated, remove the ornaments from one first.

What to listen for

In a fugue, follow the subject as it enters in a different voice and register each time. In a quartet finale, notice how a repeated cello figure and the upper melody form two separate threads.

Common misunderstandings

Counterpoint is not piled-up polyphony. If two lines cannot stand without each other, they are only harmonic layers.

Sources

• The New Grove Dictionary of Music and Musicians, 2nd ed., entry Counterpoint（Oxford University Press），用于核对对位类型与写法
• Kent Kennan, Counterpoint, 4th ed.（Prentice-Hall, 1999），用于核对声部独立与节奏错位

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