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A short history of the orchestra
From twenty players in a palace to a hundred on a stage: how the modern symphony orchestra took its shape, in five stops.
The orchestra you will see on stage, a hundred players in four families led by a conductor with a baton, is not ancient. It took shape over about two hundred years, and every stage of the story is still audible in the repertoire an orchestra plays in a single season. Five stops.
1. A band of soloists (1600 to 1750)
The first orchestras were small groups assembled for a court, a church or an opera house: a dozen or two string players, a harpsichord or organ filling in the harmony, a few winds when the occasion called for them. Nobody stood in front waving a stick; the harpsichordist or the first violinist kept things together. Bach's Brandenburg Concertos and Handel's Water Music come from this world, and when a modern orchestra plays them it shrinks to twenty players and the sound turns transparent. Listen for the harpsichord: that dry jangle is the sound of the seventeenth century.
2. The Classical orchestra (1750 to 1820)
In the second half of the eighteenth century, Haydn at the Esterházy court and then Mozart and Beethoven in Vienna standardised the thing. Strings in four parts, pairs of flutes, oboes, clarinets and bassoons, pairs of horns and trumpets, a set of timpani: perhaps forty players. The symphony was invented as a form, four movements in a fixed shape, and so was the public concert with a paying audience. The harpsichord disappeared. Beethoven stretched all of it, adding trombones and a piccolo to the Fifth Symphony's finale and a choir to the Ninth, and his demands are the reason the orchestra kept growing.
3. The Romantic expansion (1820 to 1900)
Berlioz asked for four harps and an offstage band; Wagner built a new opera house and a new tuba; Brahms, Tchaikovsky and Dvořák wrote for a string section of sixty so the tunes could sing over the brass. The conductor arrived as a specialist, first a composer leading his own music, then a career in itself. Public concert halls went up in every European and American city, most of them between 1870 and 1910, and the orchestras that still play in them were founded in the same wave: New York in 1842, Boston in 1881, Chicago in 1891, Cincinnati in 1895, Philadelphia in 1900. This is the core of the repertoire, and the reason a typical season sounds the way it does.
4. The largest orchestra (1890 to 1930)
Mahler, Richard Strauss and the early Stravinsky pushed to the limit: eight horns, quadruple woodwinds, two sets of timpani, a percussion section with a hammer and cowbells, and in Mahler's Eighth a thousand performers. This is the orchestra as a universe. Then the money ran out. Two world wars and a depression made hundred-and-twenty-player scores impractical, and composers turned toward smaller, sharper ensembles. When an orchestra programs Mahler today it hires extra players for the week, which is why those concerts are events.
5. The modern orchestra (1930 to now)
The size settled at roughly what you see now, ninety to a hundred and ten players, flexible by piece. The repertoire widened in both directions: baroque music played by small groups on period instruments, and new music from Copland and Bernstein through Adams, Higdon, Montgomery and the film composers, Williams above all, who kept the full-orchestra sound alive in the popular ear when the concert hall was drifting away from it. Orchestras became civic institutions with education programs, family series and summer parks. And the sound in the hall stopped being the only way to hear them, which turned out not to matter: a hundred years of recordings have not emptied a single hall.
What this means on the night
Look at the stage before the concert starts. Twenty players and a harpsichord: you are in stop one. Forty and a conductor: two. Sixty strings and a brass section: three. Extra chairs crammed at the back and a second timpanist: four. A season's worth of concerts is a tour of the whole story, and every work page on this site tells you which chapter you are in. The eras guide covers the same ground by ear rather than by headcount.
Written by OrchestraFinder. Dotted words open a short definition; the full glossary is here.