Johann Sebastian Bach (pronounced ) (21 March 1685 O.S. – 28 July 1750 N.S.) was a prolific German composer and organist whose sacred and secular works for choir, orchestra and solo instruments drew together the strands of the Baroque period and brought it to its ultimate maturity. Although he introduced no new forms, he enriched the prevailing German style with a robust contrapuntal technique, a control of harmonic and motivic organisation from the smallest to the largest scales, and the adaptation of rhythms and textures from abroad, particularly Italy and France. He is regarded as one of the greatest composers of all time.
Revered for their intellectual depth, technical command and artistic beauty, J.S. Bach's works include the Brandenburg concertos, the
Goldberg Variations, the keyboard suites and partitas, the
Mass in B Minor, the
St Matthew Passion,
The Musical Offering,
The Art of Fugue,
Sonatas and partitas for solo violin and a large number of cantatas, of which about 220 survive. An example of some of these stylistic traits appears below, in the chorus
Ehre sei Gott in der Höhe from the Christmas Oratorio, written in 1734 during his mature period.
Present-day Bach performers largely divide into two camps: those who follow authentic performance practice, and those who use modern instruments and playing techniques and tend towards larger ensembles. In Bach’s time orchestras and choirs were usually smaller than those known to, for example, Brahms, and even Bach's most ambitious choral works, such as his
Mass in B minor and Passions, are composed for relatively modest forces. Some of Bach's important chamber music does not indicate instrumentation, which gives even greater latitude for variety of ensemble.
"Easy listening" realisations of Bach's music and its use in advertising also contributed greatly to Bach's popularisation in the second half of the twentieth century. Among these were the Swingle Singers' versions of Bach pieces that are now well-known (for instance, the Air on the G string, or the
Wachet Auf chorale prelude) and Wendy Carlos' 1968 recording
Switched-On Bach using the then recently-invented Moog synthesizer. Jazz musicians have also adopted Bach's music, with Jacques Loussier and Uri Caine among those creating jazz versions of Bach works.
In his later years and after his death, Bach's reputation as a composer declined; his work was regarded as old-fashioned compared to the emerging classical style. Initially he was remembered more as a player, teacher and as the father of his children, most notably C.P.E. Bach. During this time, his works for keyboard were those most appreciated and composers ever since have acknowledged his mastery of the genre. Mozart, Beethoven and Chopin were among his most prominent admirers. On a visit to the Thomasschule in Leipzig, for example, Mozart heard a performance of one of the motets (BWV 225) and exclaimed "Now, here is something one can learn from!"; on being given the motets' parts, "Mozart sat down, the parts all around him, held in both hands, on his knees, on the nearest chairs. Forgetting everything else, he did not stand up again until he had looked through all the music of Sebastian Bach". Beethoven was a devotee, learning the
Well-Tempered Clavier as a child and later calling Bach the "Urvater der Harmonie" ("Original father of Harmony") and, in a pun on the literal meaning of Bach's name, "nicht Bach, sondern Meer" ("not a brook, but a sea"). Before performing, Chopin used to lock himself away before his concerts and play Bach's music. Several notable composers such as Mozart, Beethoven, Schumann and Mendelssohn began writing in a more contrapuntal style after being introduced to Bach's music.
Today the "Bach style" continues to influence musical composition, from hymns and religious works to pop and rock. Many of Bach’s themes—particularly the theme from Toccata and Fugue in D minor—have been used in rock songs repeatedly and have received notable popularity.
The revival in the composer’s reputation among the wider public was prompted in part by Johann Nikolaus Forkel’s 1802 biography, which was read by Beethoven. Goethe became acquainted with Bach's works relatively late in life, through a series of performances of keyboard and choral works at Bad Berka in 1814 and 1815; in a letter of 1827 he compared the experience of listening to Bach's music to "eternal harmony in dialogue with itself". But it was Felix Mendelssohn who did the most to revive Bach's reputation with his 1829 Berlin performance of the St Matthew Passion. Hegel, who attended the performance, later called Bach a "grand, truly Protestant, robust and, so to speak, erudite genius which we have only recently learned again to appreciate at its full value". Mendelssohn's promotion of Bach, and the growth of the composer’s stature, continued in subsequent years. The Bach Gesellschaft (Bach Society) was founded in 1850 to promote the works, publishing a comprehensive edition over the subsequent half century.
Thereafter Bach’s reputation has remained consistently high. During the twentieth century, the process of recognising the musical as well as the pedagogic value of some of the works has continued, perhaps most notably in the promotion of the
Cello Suites by Pablo Casals. Another development has been the growth of the "authentic" or period performance movement, which as far as possible attempts to present the music as the composer intended it. Examples include the playing of keyboard works on the harpsichord rather than a modern grand piano and the use of small choirs or single voices instead of the larger forces favoured by nineteenth- and early twentieth-century performers.
Johann Sebastian Bach’s contributions to music, or, to borrow a term popularised by his student Lorenz Christoph Mizler, his "musical science", are frequently bracketed with those by William Shakespeare in English literature and Isaac Newton in physics. Bach’s music was selected for inclusion on the Voyager Golden Records as an example of humanity's best achievements. Scientist and author Lewis Thomas once suggested how the people of Earth should communicate with the universe: "I would vote for Bach, all of Bach, streamed out into space, over and over again. We would be bragging of course, but it is surely excusable to put the best possible face on at the beginning of such an acquaintance. We can tell the harder truths later."