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IntervalRegisterTimbreArticulation MarksPianoClavichordOrganTheorbo

The harpsichord is the piano's predecessor and the leading keyboard instrument of the Baroque. It shares one thing with the piano — the keyboard — and does another: it plucks the strings.

And that single fact of plucking determines its entire musical language.

⚠️ One conceptual point: "no dynamic control" is not a defect; it is the starting point of a musical language. A piano's loudness comes from hammer speed; a harpsichord's plectrum is flipped by a mechanism, so its dynamics are fixed. Baroque composers therefore did not write crescendos. They wrote: - figuration and ornament (density in place of volume) - registral contrast (the colour difference between high and low) - stop changes (colour change in place of volume change) What an instrument *cannot* do shapes an entire writing convention — the harpsichord is the clearest example of that rule.

Structure: plectrum, strings and stops

Three points:

1. The plectrum is flipped by a mechanism. Pressing a key only releases that action — so key speed does not change the force of the pluck. The physical reason it cannot control dynamics. 2. Several strings per note, corresponding to different colours (sometimes different octaves). 3. Stops select string sets. Pulling different stops gives different combinations of volume and colour — its substitute for dynamic change.

Stops: how it compensates for having no dynamics

"Limitations shape the language" is worth remembering: modern listeners often find the harpsichord "expressionless", but Baroque expression was never in dynamics — it lives in the density of figuration, the amount of ornament, registral contrast and stop changes.

Range

大键琴属弦鸣乐器（键盘拨弦）。常见音域约 F1–F6，视乐器形制而定 —— 比钢琴窄，不同乐器之间差别也较大。

• About F1–F6, depending on the instrument — narrower than a piano.
• The working register is C2–C6; the great majority of Baroque keyboard writing sits there.
• Forms vary widely. There is no single "standard range" for a harpsichord, unlike the piano's uniform 88 keys.

Timbre, and how to hear it

Four cues:

1. Bright, clearly grained, with a definite attack. Plucking gives a crisp onset, unlike the piano's strike — every note is *plucked*. 2. A short tail. Once the plectrum leaves, the vibration decays quickly, so fast figuration never smears — the reason the dense Baroque textures work. 3. Fixed volume. However hard you press, it sounds the same — its most misunderstood feature. 4. Marked colour differences between stops: 8′ and 4′ combinations give completely different textures.

Playing techniques

• Touch does not change dynamics, though it slightly affects the colour (key speed and depth influence the plectrum's action).
• Ornament is the core technique. Because dynamics cannot shape expression, ornaments (trills, mordents, appoggiaturas) carry much of the expressive load.
• Stop changes between phrases or sections.
• Multiple manuals: larger instruments have two keyboards, assignable to different stop combinations and allowing the hands to contrast colours.
• Temperament and tuning: Baroque temperaments differ from today's, directly affecting harmonic colour.

The family

The harpsichord and the organ are both keyboard instruments whose touch cannot control dynamics — so both place their expression elsewhere: one in stops and ornament, the other in stops and part-writing.

History

Its departure has a concrete cause: music around 1800 began to demand crescendo and diminuendo, which it cannot do. A change in taste alone was enough to retire a dominant instrument.

Common misconceptions

• "A harpsichord is an old piano." The trigger is entirely different (plucked versus struck), so whether dynamics are controllable differs fundamentally — two different languages.
• "It is quiet because it is badly made." The small, fixed volume is a necessary consequence of the plucking mechanism, not a fault; a good harpsichord has rich colour.
• "It has no expression." Expression lives in ornament, figuration density, register and stops, not in dynamics — Baroque expression was never dynamic.
• "It can only play Baroque music." Since the 20th century much contemporary music has been written for it, including music exploiting its unique stop changes.
• "Harpsichord, clavichord, spinet — all the same." All are "early keyboards" but their triggers differ (plucked versus struck), with huge differences in control and volume.

Next

The keyboard group's next stop is the clavichord — which can control dynamics (and even add vibrato) but is too quiet to be heard outside a room. Beyond it comes the organ: an aerophone under a keyboard. :::

Sources

• 结构依通行制琴资料：键盘经拨子（传统为羽管，现代多为塑料）拨弦；每音可有多根弦与多组拨子；音栓（stops）控制哪一组弦发声
• 「大键琴属弦鸣乐器（键盘拨弦）」依 Hornbostel–Sachs 分类
• 「常见音域约 F1–F6，视乐器形制而定」依通行乐器资料
• 「拨弦的力度由机械固定，按键快慢不影响音量 —— 因此大键琴不能靠触键控制力度」依乐器声学

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