Pyotr Ilyich Tchaikovsky (7 May 1840 – 6 November 1893),anglicised as Peter Ilyich Tchaikovsky, was a Russian composer whose works included symphonies, concertos, operas, ballets, chamber music, and a choral setting of the Russian Orthodox Divine Liturgy. Some of these are among the most popular theatrical music in the classical repertoire. He was the first Russian composer whose music made a lasting impression internationally, which he bolstered with appearances as a guest conductor later in his career in Europe and the United States. One of these appearances was at the inaugural concert of Carnegie Hall in New York City in 1891. Tchaikovsky was honored in 1884 by Emperor Alexander III, and awarded a lifetime pension in the late 1880s.
Although musically precocious, Tchaikovsky was educated for a career as a civil servant. There was scant opportunity for a musical career in Russia at that time, and no system of public music education. When an opportunity for such an education arose, he entered the nascent Saint Petersburg Conservatory, from which he graduated in 1865. The formal Western-oriented teaching he received there set him apart from composers of the contemporary nationalist movement embodied by the Russian composers of The Five, with whom his professional relationship was mixed. Tchaikovsky's training set him on a path to reconcile what he had learned with the native musical practices to which he had been exposed from childhood. From this reconciliation, he forged a personal but unmistakably Russian style—a task that did not prove easy. The principles that governed melody, harmony and other fundamentals of Russian music ran completely counter to those that governed Western European music; this seemed to defeat the potential for using Russian music in large-scale Western composition or from forming a composite style, and it caused personal antipathies that dented Tchaikovsky's self-confidence. Russian culture exhibited a split personality, with its native and adopted elements having drifted apart increasingly since the time of Peter the Great, and this resulted in uncertainty among the intelligentsia of the country's national identity.

The Liturgy of St. John Chrysostom is an a cappella choral composition by Pyotr Ilyich Tchaikovsky, his Op. 41, composed in 1878.It consists of settings of texts taken from the Divine Liturgy of St. John Chrysostom, the most celebrated of the eucharistic services of the Eastern Orthodox Church. Tchaikovsky's setting constitutes the first "unified musical cycle" of the liturgy.

Pyotr Ilyich Tchaikovsky ( 7 May 1840 – 6 November 1893),anglicised as Peter Ilyich Tchaikovsky was a Russian composer whose works included symphonies, concertos, operas, ballets, chamber music, and a choral setting of the Russian Orthodox Divine Liturgy. Some of these are among the most popular theatrical music in the classical repertoire. He was the first Russian composer whose music made a lasting impression internationally, which he bolstered with appearances as a guest conductor later in his career in Europe and the United States. One of these appearances was at the inaugural concert of Carnegie Hall in New York City in 1891. Tchaikovsky was honored in 1884 by Emperor Alexander III, and awarded a lifetime pension in the late 1880s.
Although musically precocious, Tchaikovsky was educated for a career as a civil servant. There was scant opportunity for a musical career in Russia at that time, and no system of public music education. When an opportunity for such an education arose, he entered the nascent Saint Petersburg Conservatory, from which he graduated in 1865. The formal Western-oriented teaching he received there set him apart from composers of the contemporary nationalist movement embodied by the Russian composers of The Five, with whom his professional relationship was mixed. Tchaikovsky's training set him on a path to reconcile what he had learned with the native musical practices to which he had been exposed from childhood. From this reconciliation, he forged a personal but unmistakably Russian style—a task that did not prove easy. The principles that governed melody, harmony and other fundamentals of Russian music ran completely counter to those that governed Western European music; this seemed to defeat the potential for using Russian music in large-scale Western composition or from forming a composite style, and it caused personal antipathies that dented Tchaikovsky's self-confidence. Russian culture exhibited a split personality, with its native and adopted elements having drifted apart increasingly since the time of Peter the Great, and this resulted in uncertainty among the intelligentsia of the country's national identity.

Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791), baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical era.
Mozart showed prodigious ability from his earliest childhood. Already competent on keyboard and violin, he composed from the age of five and performed before European royalty. At 17, he was engaged as a court musician in Salzburg, but grew restless and travelled in search of a better position, always composing abundantly. While visiting Vienna in 1781, he was dismissed from his Salzburg position. He chose to stay in the capital, where he achieved fame but little financial security. During his final years in Vienna, he composed many of his best-known symphonies, concertos, and operas, and portions of the Requiem, which was largely unfinished at the time of his death. The circumstances of his early death have been much mythologized. He was survived by his wife Constanze and two sons.
He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, operatic, and choral music. He is among the most enduringly popular of classical composers, and his influence on subsequent Western art music is profound; Beethoven composed his own early works in the shadow of Mozart, and Joseph Haydn wrote that "posterity will not see such a talent again in 100 years.

The Requiem Mass in D minor (K. 626) by Wolfgang Amadeus Mozart was composed in Vienna in 1791 and left unfinished at the composer's death on December 5. A completion dated 1792 by Franz Xaver Süssmayr was delivered to Count Franz von Walsegg, who had anonymously commissioned the piece for a requiem mass to commemorate the February 14 anniversary of his wife's death.
The autograph manuscript shows the finished and orchestrated introit in Mozart's hand, as well as detailed drafts of the Kyrie and the sequence Dies Irae as far as the first nine bars of "Lacrimosa", and the offertory. It cannot be shown to what extent Süssmayr may have depended on now lost "scraps of paper" for the remainder; he later claimed the Sanctus and Agnus Dei as his own. Walsegg probably intended to pass the Requiem off as his own composition, as he is known to have done with other works. This plan was frustrated by a public benefit performance for Mozart's widow Constanze. A modern contribution to the mythology is Peter Shaffer's 1979 play Amadeus, in which a mysterious messenger orders Mozart to write a requiem mass, giving no explanation for the order; Mozart (in the play) then comes to believe that the piece is meant to be the requiem mass for his own funeral.
The Requiem is scored for 2 basset horns in F, 2 bassoons, 2 trumpets in D, 3 trombones (alto, tenor & bass), timpani (2 drums), violins, viola and basso continuo (cello, double bass, and organ). The vocal forces include soprano, contralto, tenor, and bass soloists and an SATB mixed choir.

Wolfgang Amadeus Mozart (27 January 1756 – 5 December 1791), baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical era.
Mozart showed prodigious ability from his earliest childhood. Already competent on keyboard and violin, he composed from the age of five and performed before European royalty. At 17, he was engaged as a court musician in Salzburg, but grew restless and travelled in search of a better position, always composing abundantly. While visiting Vienna in 1781, he was dismissed from his Salzburg position. He chose to stay in the capital, where he achieved fame but little financial security. During his final years in Vienna, he composed many of his best-known symphonies, concertos, and operas, and portions of the Requiem, which was largely unfinished at the time of his death. The circumstances of his early death have been much mythologized. He was survived by his wife Constanze and two sons.
He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, operatic, and choral music. He is among the most enduringly popular of classical composers, and his influence on subsequent Western art music is profound; Beethoven composed his own early works in the shadow of Mozart, and Joseph Haydn wrote that "posterity will not see such a talent again in 100 years

Jakob Ludwig Felix Mendelssohn Bartholdy (3 February 1809 – 4 November 1847), born and widely known as Felix Mendelssohn,was a German composer, pianist, organist and conductor of the early Romantic period.
A grandson of the philosopher Moses Mendelssohn, Felix Mendelssohn was born into a prominent Jewish family, although initially he was raised without religion and was later baptised as a Reformed Christian. Mendelssohn was recognised early as a musical prodigy, but his parents were cautious and did not seek to capitalise on his talent.
Early success in Germany, where he also revived interest in the music of Johann Sebastian Bach, was followed by travel throughout Europe. Mendelssohn was particularly well received in Britain as a composer, conductor and soloist, and his ten visits there – during which many of his major works were premiered – form an important part of his adult career. His essentially conservative musical tastes, however, set him apart from many of his more adventurous musical contemporaries such as Franz Liszt, Richard Wagner and Hector Berlioz. The Leipzig Conservatoire (now the University of Music and Theatre Leipzig), which he founded, became a bastion of this anti-radical outlook.
Mendelssohn wrote symphonies, concerti, oratorios, piano music and chamber music. His best-known works include his Overture and incidental music for A Midsummer Night's Dream, the Italian Symphony, the Scottish Symphony, the overture The Hebrides, his mature Violin Concerto, and his String Octet. His Songs Without Words are his most famous solo piano compositions. After a long period of relative denigration due to changing musical tastes and anti-Semitism in the late 19th and early 20th centuries, his creative originality has now been recognised and re-evaluated. He is now among the most popular composers of the Romantic era.

The concert overture The Hebrides (German: Die Hebriden), Op. 26, also known as Fingal's Cave (Die Fingalshöhle), was composed by Felix Mendelssohn in 1830. The piece was inspired by a cavern known as Fingal's Cave on Staffa, an island in the Hebrides archipelago located off the west coast of Scotland. As is common with Romantic era pieces, this is not an overture in the sense that it precedes a play or opera; the piece is a concert overture, a stand-alone musical selection, and has now become part of standard orchestral repertoire. The piece was dedicated to King Frederick William IV of Prussia (then Crown Prince of Prussia).

The Symphony No. 4 in A major, Op. 90, commonly known as the Italian, is an orchestral symphony written by German composer Felix Mendelssohn.
The work has its origins, like the composer's Scottish Symphony and the orchestral overture The Hebrides (Fingal's Cave), in the tour of Europe which occupied Mendelssohn from 1829 to 1831. Its inspiration is the colour and atmosphere of Italy, where Mendelssohn made sketches but left the work incomplete.The Italian Symphony was finished in Berlin, 13 March 1833, in response to an invitation for a symphony from the London (now Royal) Philharmonic Society; he conducted the first performance himself in London on 13 May 1833, at a London Philharmonic Society concert. The symphony's success, and Mendelssohn's popularity, influenced the course of British music for the rest of the century.However, Mendelssohn remained unsatisfied with the composition, which cost him, he said, some of the bitterest moments of his career; he revised it in 1834 and even planned to write alternate versions of the second, third, and fourth movements. He never published the symphony, and it appeared in print only in 1851; thus it is numbered as his 'Symphony No. 4', although it was in fact the third in order of composition.

Frédéric François Chopin (1 March 1810 – 17 October 1849), born Fryderyk Franciszek Chopin, was a Romantic-era Polish composer. A child prodigy, Chopin grew up in Warsaw, completed his musical education there, and composed many of his works there before leaving Poland shortly before the outbreak of the November 1830 Uprising.
Effectively cut off from Poland, at age 20 he settled in Paris. During the remaining 19 years of his life, he gave only some 30 public performances, preferring the more intimate atmosphere of the salon; he supported himself by selling his compositions and as a sought-after piano teacher. He formed a friendship with Franz Liszt and was admired by many of his musical contemporaries, including Robert Schumann. After a failed engagement with a Polish girl, from 1837 to 1847 he maintained an often troubled relationship with the French writer George Sand. A brief and unhappy visit with Sand to Majorca in 1838–39 was also one of his most productive periods of composition. In his last years, he was financially supported by his admirer Jane Stirling, who also arranged for him to visit Scotland in 1848. Through most of his life, Chopin suffered from poor health; he died in Paris in 1849, probably of tuberculosis.
All of Chopin's compositions include the piano; most are for solo piano, although he also wrote two piano concertos, a few chamber pieces, and some songs to Polish lyrics. His keyboard style is often technically demanding; his own performances were noted for their nuance and sensitivity. Chopin invented the concept of instrumental ballade; his major piano works also include sonatas, mazurkas, waltzes, nocturnes, polonaises, études, impromptus, scherzos, and preludes. Many of these works were published only after Chopin's death. Stylistically, they contain elements of both Polish folk music and of the classical tradition of J.S. Bach, Mozart and Schubert, whom Chopin particularly admired. Chopin's innovations in keyboard style, musical form, and harmony were influential throughout the late Romantic period and since.
Both in his native Poland and beyond, Chopin's music, his association (if only indirect) with political insurrection, his amours and his early death have made him, in the public consciousness, a leading symbol of the Romantic era. His works remain popular, and he has been the subject of numerous films and biographies of varying degrees of historical accuracy.

Chopin's 24 Preludes, Op. 28, are a set of short pieces for the piano, one in each of the twenty-four keys, originally published in 1839. The French edition was dedicated to the piano-maker and publisher Camille Pleyel, who had commissioned the work for 2,000 francs (equivalent to nearly $30,000 in present day).The German edition was dedicated to Joseph Christoph Kessler, a composer of piano studies during Chopin's time. Ten years earlier, Kessler had dedicated his own set of 24 Preludes, Op. 31, to Chopin. Although the term prelude is generally used to describe an introductory piece, Chopin's stand as self-contained units, each conveying a specific idea or emotion.
Chopin wrote them between 1835 and 1839, partly at Valldemossa, Majorca, where he spent the winter of 1838–39 and where he had fled with George Sand and her children to escape the damp Paris weather.

Johann Sebastian Bach (31 March 1685 – 28 July 1750) was a German composer, organist, harpsichordist, violist, and violinist of the Baroque period. He enriched many established German styles through his skill in counterpoint, harmonic and motivic organisation, and the adaptation of rhythms, forms, and textures from abroad, particularly from Italy and France. Bach's compositions include the Brandenburg Concertos, the Mass in B minor, the The Well-Tempered Clavier, his cantatas, chorales, partitas, Passions, and organ works. His music is revered for its intellectual depth, technical command, and artistic beauty.
Bach was born in Eisenach, Saxe-Eisenach, into a very musical family; his father, Johann Ambrosius Bach, was the director of the town musicians, and all of his uncles were professional musicians. His father taught him to play violin and harpsichord, and his brother, Johann Christoph Bach, taught him the clavichord and exposed him to much contemporary music.Bach also went to St Michael's School in Lüneburg because of his singing skills. After graduating, he held several musical posts across Germany: he served as Kapellmeister (director of music) to Leopold, Prince of Anhalt-Köthen, Cantor of Thomasschule in Leipzig, and Royal Court Composer to August III. Bach's health and vision declined in 1749, and he died on 28 July 1750. Modern historians believe that his death was caused by a combination of stroke and pneumonia.
Bach's abilities as an organist were highly respected throughout Europe during his lifetime, although he was not widely recognised as a great composer until a revival of interest and performances of his music in the first half of the 19th century. He is now generally regarded as one of the main composers of the Baroque period, and as one of the greatest composers of all time.

The Sonatas and Partitas for solo violin (BWV 1001–1006) are a set of six works composed by Johann Sebastian Bach. They are also called the Sonatas and Partias for solo violin, in accordance with Bach's original terms: "Partia" was common in German-speaking regions during Bach's time, whereas the Italian "Partita" was introduced to this set in the 1879 Bach Gesellschaft edition, having become standard at that time.The set consists of three sonatas da chiesa, in four movements, and three partitas (or partias), in dance-form movements.