Harmonic Bed

Give the melody a stable background without competing for its place.

Related

VoicingClose PositionTextureOrgan

The job of a harmonic bed is not to state the chords but to give the melody a stable background without taking its place. Too full and the melody loses shape; too thin and the section loses support.

The problem

When bed and melody change notes at the same moment, the ear cannot tell which is primary. Decide where the bed stands still before choosing the sound.

Texture or frequency band

The bed usually sits in the middle register, as long notes, broken figures or slow voice movement. It should alternate with the melody, still while the melody moves and active when the melody pauses. Avoid the upper-mid range where voices are most sensitive.

Approach and judgement

Choose whether chords change once per bar or once every two bars. Too fast and the bed becomes a rhythm part; too slow and the harmony drags. Use inversions and smooth voice leading to avoid leaps, keeping inner parts stepwise.

What to listen for

In an organ chorale, long chords are joined by the lowest voice while the melody stays on top. In a slow string movement, the inner parts barely move although the harmonic colour keeps changing.

Common misunderstandings

A bed is not a pad preset. Strings, organ and sustained voices can all provide one; what matters is duration and register.

Sources

• The New Grove Dictionary of Music and Musicians, 2nd ed., entry Accompaniment（Oxford University Press），用于核对伴奏织体与和声背景
• Walter Piston, Harmony, 5th ed.（W. W. Norton, 1987），用于核对和弦连接与声部保持

Used for fact-checking only; all prose is original.