A continuous tradition of written-down sacred and secular European music — from neumes scratched onto medieval parchment to sound files exported from Sibelius last week.
The story usually starts with Gregorian chant — anonymous, monophonic, modal — sung in monasteries from roughly the 9th century onward. Around the year 900, scribes began notating contour with neumes; by the 11th century, Guido of Arezzo's four-line staff fixed pitches in space. Polyphony followed: Léonin and Pérotin at Notre-Dame de Paris in the 1170s wrote some of the first multi-voice works that survive in legible form. Machaut's Messe de Nostre Dame (c. 1365) is the first complete Mass setting attributable to a single composer. By Josquin des Prez (d. 1521) the language was fully imitative. By Palestrina (d. 1594) it was canonical.
c. 1600 – 1750. Tonality, basso continuo, the rise of the concerto and the opera house.
Around 1600, a group of Florentine intellectuals called the Camerata invented opera trying to reconstruct ancient Greek drama. Monteverdi's L'Orfeo (1607) is the first opera still in repertory. The Baroque century that followed saw the standardization of major-minor tonality, the figured bass, and the violin family. Corelli codified the trio sonata. Vivaldi turned out 500 concertos at the Ospedale della Pietà.
Bach, working in Leipzig as cantor of St. Thomas's church, brought Baroque polyphony to its summit: the Mass in B Minor, the Well-Tempered Clavier, the St. Matthew Passion. Handel, his exact contemporary, went south and west — Italian opera, then English oratorio, then Messiah (1741). Both died nearly blind. Both had been operated on by the same itinerant English oculist, John Taylor.
c. 1750 – 1820. Vienna becomes the center; sonata-allegro form becomes the engine.
Haydn invented (or near enough) the string quartet and the symphony as we know them. Across 104 symphonies, six dozen quartets and the late oratorios The Creation (1798) and The Seasons (1801), he taught Europe how four instruments and four movements could think. Mozart, his friend and admirer, fused Italian melodic gift to Haydnesque architecture and added to the canon the three Da Ponte operas (Le nozze di Figaro, 1786; Don Giovanni, 1787; Così fan tutte, 1790), the late symphonies (No. 39, 40, 41), and the unfinished Requiem (K. 626).
Beethoven cracked the form open. The Eroica (1803) doubles the length of any prior symphony. The Ninth (1824) puts a chorus in one. The late quartets (Op. 127–135) are still where composers go to learn what is possible.
c. 1820 – 1900. The orchestra grows. The composer becomes a hero, a sufferer, a nationalist.
Schubert wrote 600 lieder, dying at 31. Berlioz's Symphonie fantastique (1830) put a recurring idée fixe through five movements of opium-drenched program music. Chopin lived in salons and wrote almost exclusively for piano. Liszt invented the recital, the symphonic poem, and the celebrity tour.
Wagner built his own opera house at Bayreuth to stage Der Ring des Nibelungen (1876). Brahms, his stubborn opposite, kept faith with absolute form: four symphonies, the German Requiem, the late clarinet works.
Tchaikovsky and Mussorgsky in Russia. Dvořák and Smetana in Bohemia. Verdi in Italy. Mahler in Vienna and New York, expanding the symphony into a cosmic vessel — the Second ("Resurrection," 1894) ends with a chorus singing of the soul's rebirth.
1900 – present. Tonality fractures. Many languages co-exist.
Debussy dissolved harmony into color (Prélude à l'après-midi d'un faune, 1894). Schoenberg suspended it (Pierrot lunaire, 1912) and then organized its absence with the twelve-tone method. Stravinsky shocked Paris with Le Sacre du printemps (1913), then spent decades reinventing himself — neoclassical, then serial. Bartók fused Hungarian folk modes to high modernism. Shostakovich wrote symphonies under Stalin's eye. Messiaen transcribed birdsong. Ligeti made micropolyphonic clouds (Atmosphères, 1961). Reich and Glass found minimalism in repetition. Today: Adès, Saariaho, Andriessen, Adams, Anna Thorvaldsdottir, Caroline Shaw.
An entry list, not a canon. Hear one piece by each.
The summit of polyphony. Start with the Brandenburg Concerto No. 3 or any cello suite.
Italian opera and English oratorio. Messiah (1741); Water Music (1717).
Father of the symphony and quartet. Symphony No. 104 "London"; the Op. 76 quartets.
Operatic genius, instrumental architect. Don Giovanni; Symphony No. 41 "Jupiter".
Bridge to Romanticism. Symphony No. 5; Op. 131 String Quartet.
Lied and chamber. Winterreise (1827); String Quintet D. 956.
The total artwork. Tristan und Isolde (1865); the Ring cycle.
Late Romantic classicism. Symphony No. 4; the late piano pieces, Opp. 116–119.
The symphony as world. Symphony No. 2 "Resurrection"; Das Lied von der Erde.
Impressionism. La mer (1905); the two books of Préludes.
Three styles in one life. Le Sacre du printemps (1913); Symphony of Psalms.
15 symphonies, 15 quartets, one century of Soviet history. Symphony No. 5; String Quartet No. 8.
A modern symphony orchestra of c. 90–110 players, seated as for the late Romantic repertoire.
Ten recordings that are themselves part of the canon.
Words you will hear at intermission.
Leonard Bernstein conducts an "Ode to Freiheit" in Berlin, December 25, 1989 — three weeks after the Wall fell. The choral finale of the Ninth, performed by an orchestra and chorus assembled from East and West.