The Orchestra 1650-1910: How the Sound Changed

Three orchestras, three sound worlds

Between 1650 and 1910 the orchestra changed almost beyond recognition. A Baroque band might have had a dozen players and a harpsichord. A late Romantic orchestra could field over a hundred. Section A includes short unfamiliar extracts from all four areas of study. In an extract from this period, identify the era, the instruments and the way the sound is built. This lesson gives you three real extracts — one from each stage — so you can hear the change, not just read about it.

The Baroque orchestra: strings, continuo and terraced dynamics

A Baroque orchestra (about 1650–1750) was built around a string section and the continuo. Grander pieces added oboes, and sometimes trumpets and timpani for ceremonial occasions, but the core sound was strings and keyboard. Because a harpsichord cannot get gradually louder — you either press a key or you do not — Baroque music often used terraced dynamics: a loud block, then a soft block, with no gradual join between them.

Strings, unlike a harpsichord, can swell in volume, and composers used that to build ceremonial grandeur. Handel’s coronation anthem Zadok the Priest opens with strings alone, playing very quietly, in a homophonic texture — rippling arpeggiated string figuration over sustained harmonies, with no independent melodic lines. Over the opening the strings build a long, gradual crescendo, getting steadily louder until the choir crashes in with a loud homophonic block of its own.

Listen for: strings only at the very start, playing quietly and homophonically, then a long gradual crescendo that keeps building until the full choir enters together at about 1:36 in one loud homophonic block.

The Classical orchestra: new instruments, clearer texture

By the Classical era (about 1750–1820) the harpsichord continuo had disappeared and the orchestra had grown. Woodwind now played in pairs — flutes, oboes, bassoons, and clarinets from the 1780s — and horns were a standard section, not an occasional addition. The dense, independent lines of Baroque counterpoint gave way to clear homophonic writing: one clear melody over a simple accompaniment, built from balanced phrases of four or eight bars.

Haydn’s Symphony No. 94, the ‘Surprise’ symphony, shows Classical restraint and Classical wit in the same movement. The second movement opens with the strings alone, playing a simple binary theme very quietly — two eight-bar sections, each repeated — and at the very end of the first section’s repeat, with no warning, the full orchestra crashes in on a single fortissimo chord.

Listen for: strings alone at the start, very quiet, in a binary theme that repeats each of its two eight-bar sections; then, at about 0:42, a sudden full-orchestra fortissimo chord breaks the quiet.

That shock chord is not terraced dynamics in the Baroque sense — it is not a keyboard limitation, it is a joke. Haydn had a full dynamic range available and chose to spring it on the listener. That freedom to shape dynamics for dramatic effect, rather than because an instrument could not do otherwise, is where the Romantic era begins.

The hinge into Romanticism: Beethoven

Beethoven’s Symphony No. 1 (1800) still uses a Classical-sized orchestra, but it pushes at the edges of Classical convention. The symphony is in C major, yet its very first chord is a dominant seventh belonging to F major — the wrong key, harmonically speaking. For a few bars the listener does not know where the music actually stands. That kind of harmonic unease, used on purpose, is a taste of Romantic drama to come.

When the fast Allegro arrives, at about 1:50, the mood changes completely. The first subject is built from short, repeated motifs, pushed forward with sforzando accents and a rapid crescendo, all in a driving 2/2 alla breve.

Listen for: the unsettled opening chord, which belongs to F major rather than the home key of C major; then, from about 1:50, the energetic Allegro first subject with its short repeated motifs, sforzando accents and rapid crescendo.

Nothing here sounds shocking to modern ears, but in 1800 it was daring. Later Romantic composers took this same instinct — sudden accents, restless harmony, dynamics used for drama rather than decoration — and combined it with a much bigger orchestra: extra horns, valved brass, tuba, harp and a larger string section, capable of a dynamic range from a whisper to a wall of sound.

Naming what you hear

In the exam you will not be told which piece is playing. You have to build the description yourself from what you hear. Start with the forces: is it strings alone, full orchestra, or something in between? Then the texture: is it contrapuntal, homophonic chords, or melody with accompaniment? Then the dynamics: is the volume shifting in sudden blocks, building gradually, or jumping with a shock accent? Naming all three, with the correct term, is worth more than saying the piece “sounds grand” or “sounds exciting”.