The first page of Mozart's autograph manuscript for the Requiem, K. 626, headed 'Requiem' and signed 'di me W. A. Mozart'
Manuscript: W.A. Mozart, 1791, autograph, Austrian National Library (Codex 17561a) / Wikimedia Commons, Public Domain

c. 1750 – 1820

  • Balance and clarity over Baroque ornamentation
  • Sonata form - the structural backbone of symphonies, sonatas, and more
  • The modern orchestra and the string quartet taking shape
  • Mozart, Haydn, and early Beethoven

If the Baroque era prized elaboration, the Classical era that followed it prized restraint. Composers reacted against the density of Bach and Handel's generation in favor of clearer melodies, simpler harmonic accompaniment, and a strong sense of balance and proportion - musical architecture, in a sense, rather than musical embroidery.

A note on the name: "classical music" is also the everyday term for the whole Western concert tradition, from chant to today. When musicians talk about the Classical era or Classical style, they mean this specific period, roughly the second half of the 18th century and the first years of the 19th.

The world it came from

This was the age of the Enlightenment, with its faith in reason, order, and natural simplicity, and music reflected those ideals. It was also an age of change for musicians themselves. Haydn spent nearly three decades as a court composer to the wealthy Esterházy family, but late in life he became a celebrity in London, writing symphonies for public concerts. Mozart left a secure court post to make a freelance living in Vienna - teaching, performing, publishing, and staging operas. Beethoven went further still, supported by patrons but answering to no employer. Public concerts, music publishing, and amateur music-making at home were all growing fast, and Vienna became the era's musical capital.

What it sounds like

Classical music is built on clear, singable melodies in balanced phrases

  • often in neat pairs, like a question and an answer. Instead of the Baroque's many equal voices, a typical texture is a melody with accompaniment, the accompaniment often a simple broken-chord pattern called an Alberti bass. The basso continuo faded away. Composers used contrast more freely, too: sudden shifts of mood, dynamics, and key within a single movement, rather than one sustained emotion.

The main forms

The defining structural achievement of the era is sonata form: a three-part template (exposition, development, recapitulation) built around presenting one or two contrasting musical themes, working them through tension in the middle section, and resolving back to the opening material. It became the default shape for symphony and sonata movements for the next 150 years, which is why understanding it unlocks an enormous amount of later music too. Our sonata page explains it step by step.

This is also when the modern orchestra and the string quartet take the form we'd recognize today, and when the symphony grows from a short curtain-raiser into a substantial, multi-movement centerpiece. Haydn is often credited as "the father of the symphony" and "the father of the string quartet" for exactly this reason. The concerto became a showcase for star performers (often the composer), and comic opera - Mozart's The Marriage of Figaro above all - brought real human characters to the stage.

Instruments

The orchestra standardized around strings plus pairs of woodwinds, horns, trumpets, and timpani - a group of perhaps thirty to forty players. The orchestra at Mannheim, in Germany, became famous for its discipline and dramatic effects, like a long crescendo building from near-silence. The clarinet joined the orchestra, and the piano gradually replaced the harpsichord as the keyboard of choice.

Composers to know

Wolfgang Amadeus Mozart, Joseph Haydn, and the early work of Ludwig van Beethoven are the core. Alongside them:

  • Carl Philipp Emanuel Bach (1714 – 1788) - J.S. Bach's son, whose restless, expressive keyboard music bridged the two eras.
  • Christoph Willibald Gluck (1714 – 1787) - reformed opera to put drama ahead of vocal display.
  • Johann Christian Bach (1735 – 1782) - the "London Bach," a big influence on the young Mozart.
  • Joseph Bologne, Chevalier de Saint-Georges (1745 – 1799) - a virtuoso violinist, composer, and conductor in Paris, and a celebrated fencer.
  • Luigi Boccherini (1743 – 1805) - a cellist-composer whose famous Minuet is still everywhere.

Into the Romantic era

Beethoven was born into the Classical world and studied with Haydn, but his music kept stretching its forms - longer movements, more violent contrasts, more personal drama. His "Eroica" Symphony (1805) is often treated as the doorway into the Romantic era, which took his example as its starting point.

Where to start listening: Mozart's Symphony No. 40 is a compact, dramatic introduction to everything sonata form can do; Haydn's Symphony No. 94 ("Surprise") shows the era's wit. Mozart's Eine kleine Nachtmusik is the Classical style at its most charming.