MUSIC ORCHESTRA

An orchestra is a sizable instrumental ensemble that contains sections of string, brass, woodwind, and percussion instruments. The term orchestra derives from the Greek ορχήστρα, the name for the area in front of an ancient Greek stage reserved for the Greek chorus. The orchestra grew by accretion throughout the eighteenth and nineteenth centuries, but changed very little in composition during the course of the twentieth century.

A smaller-sized orchestra for this time period (of about fifty players or fewer) is called a chamber orchestra. A full-size orchestra (about 100 players) may sometimes be called a "symphony orchestra" or "philharmonic orchestra"; these modifiers do not necessarily indicate any strict difference in either the instrumental constitution or role of the orchestra, but can be useful to distinguish different ensembles based in the same city (for instance, the London Symphony Orchestra and the London Philharmonic Orchestra). A symphony orchestra will usually have over eighty musicians on its roster, in some cases over a hundred, but the actual number of musicians employed in a particular performance may vary according to the work being played and the size of the venue. A leading chamber orchestra might employ as many as fifty musicians; some are much smaller than that.

The typical symphony orchestra consists of four proportionate groups of similar musical instruments called the woodwinds, brass, percussion, and strings. The orchestra, depending on the size, contains almost all of the standard instruments in each group. In the history of the orchestra, its instrumentation has been expanded over time, often agreed to have been standardized by the classical period and Beethoven's influence on the classical model.

Expanded instrumentation

Apart from the core orchestral complement, various other instruments are called for occasionally. These include the classical guitar, heckelphone, flugelhorn, cornet, harpsichord, and organ. Saxophones, for example, appear in a limited range of 19th and 20th century scores. While appearing only as featured solo instruments in some works, for example Maurice Ravel's orchestration of Modest Mussorgsky's Pictures at an Exhibition and Sergei Rachmaninoff's Symphonic Dances, the saxophone is included in other works, such as Ravel's Boléro, Prokofiev's Romeo and Juliet Suites 1 and 2, Vaughan Williams Symphony No.6 and Symphony No.9 and William Walton's Belshazzar's Feast, and many other works as a member of the orchestral ensemble. The euphonium is featured in a few late Romantic and 20th century works, usually playing parts marked "tenor tuba", including Gustav Holst's The Planets, and Richard Strauss's Ein Heldenleben. The Wagner tuba, a modified member of the horn family, appears in Richard Wagner's cycle Der Ring des Nibelungen and several other works by Richard Strauss, Béla Bartók, and others; it has a prominent role in Anton Bruckner's Symphony No. 7 in E Major.[1] Cornets appear in Pyotr Ilyich Tchaikovsky's ballet Swan Lake, Claude Debussy's La Mer, and several orchestral works by Hector Berlioz. Unless these instruments are played by members doubling on another instrument (for example, a trombone player changing to euphonium for a certain passage), orchestras will use freelance musicians to augment their regular rosters.

The 20th century orchestra was far more flexible than its predecessors. In composers such as Beethoven's and Felix Mendelssohn's time, the orchestra was composed of a fairly standard core of instruments which was very rarely modified. As time progressed, and as the Romantic saw changes in accepted modification with composers such as Berlioz, followed by Johannes Brahms and eventually Gustav Mahler, the 20th century saw that orchestration could practically be hand-picked by the composer.

With this history in mind, the orchestra can be seen to have a general evolution as outlined below. The first is a classical orchestra (i.e. Beethoven/late Haydn), the second an early/mid- romantic (i.e. Brahms/Dvořák/Schumann), late romantic/early 20th century (i.e. Wagner/Mahler/Richard Strauss), modern (i.e. Ravel/Bartok/Debussy/Stravinsky to the present day, although as explained above this was far more flexible than the list implies and often forces would surpass the romantic/transition orchestra).

History of the orchestra

Early history

The modern orchestra has its historical roots in Ancient Egypt. The first orchestras were made up of small groups of musicians that gathered for festivals, holidays or funerals. During the time of the Roman Empire, the government suppressed the musicians and informal ensembles were banned[why?], but they reappeared after the collapse of the Empire. It was not until the 11th century that families of instruments started to appear with differences in tones and octaves. True modern orchestras started in the late 16th century when composers started writing music for instrumental groups. In the 15th and 16th centuries in Italy the households of nobles had musicians to provide music for dancing and the court, however with the emergence of the theatre, particularly opera, in the early 17th century, music was increasingly written for groups of players in combination, which is the origin of orchestral playing. Opera originated in Italy, and Germany eagerly followed. Dresden, Munich and Hamburg successively built opera houses. At the end of the 17th century opera flourished in England under Henry Purcell, and in France under Lully, who with the collaboration of Molière also greatly raised the status of the entertainments known as ballets, interspersed with instrumental and vocal music.

In the 17th century and early 18th century, instrumental groups were taken from all of the available talent. A composer such as Johann Sebastian Bach had control over almost all of the musical resources of a town, whereas Handel would hire the best musicians available. This placed a premium on being able to rewrite music for whichever singers or musicians were best suited for a performance—Handel produced different versions of the Messiah oratorio almost every year.

As nobility began to build retreats away from towns, they began to hire musicians to form permanent ensembles. Composers such as the young Joseph Haydn would then have a fixed body of instrumentalists to work with. At the same time, travelling virtuoso performers such as the young Wolfgang Amadeus Mozart would write concerti that showed off their skills, and they would travel from town to town, arranging concerts along the way. The aristocratic orchestras worked together over long periods, making it possible for ensemble playing to improve with practice.

Mannheim School

This change, from civic music making where the composer had some degree of time or control, to smaller court music making and one-off performance, placed a premium on music that was easy to learn, often with little or no rehearsal. The results were changes in musical style and emphasis on new techniques. Mannheim had one of the most famous orchestras of that time, where notated dynamics and phrasing, previously quite rare, became standard (see Mannheim school). It also attended a change in musical style from the complex counterpoint of the baroque period, to an emphasis on clear melody, homophonic textures, short phrases, and frequent cadences: a style that would later be defined as classical.

Throughout the late 18th century composers would continue to have to assemble musicians for a performance, often called an "Academy", which would, naturally, feature their own compositions. In 1781, however, the Leipzig Gewandhaus Orchestra was organized from the merchants concert society, and it began a trend towards the formation of civic orchestras that would accelerate into the 19th century. In 1815, Boston's Handel and Haydn Society was founded, in 1842 the New York Philharmonic and the Vienna Philharmonic were formed, and in 1858, the Hallé Orchestra was formed in Manchester. There had long been standing bodies of musicians around operas, but not for concert music: this situation changed in the early 19th century as part of the increasing emphasis in the composition of symphonies and other purely instrumental forms. This was encouraged by composer critics such as E. T. A. Hoffmann who declared that instrumental music was the "purest form" of music. The creation of standing orchestras also resulted in a professional framework where musicians could rehearse and perform the same works repeatedly, leading to the concept of a repertoire in instrumental music.

Performance standards


In the 1830s, conductor François Antoine Habeneck, began rehearsing a selected group of musicians in order to perform the symphonies of Beethoven, which had not been heard of in their entirety in Paris. He developed techniques of rehearsing the strings separately, notating specifics of performance, and other techniques of cuing entrances that were spread across Europe. His rival and friend Hector Berlioz would adopt many of these innovations in his touring of Europe.

Instrumental craftsmanship

The invention of the piston and rotary valve by Heinrich Stölzel and Friedrich Blühmel, both Silesians, in 1815, was the first in a series of innovations, including the development of modern keywork for the flute by Theobald Boehm and the innovations of Adolphe Sax in the woodwinds. These advances would lead Hector Berlioz to write a landmark book on instrumentation, which was the first systematic treatise on the use of instrumental sound as an expressive element of music.

The effect of the invention of valves for the brass was felt almost immediately: instrument-makers throughout Europe strove together to foster the use of these newly refined instruments and continuing their perfection; and the orchestra was before long enriched by a new family of valved instruments, variously known as tubas, or euphoniums and bombardons, having a chromatic scale and a full sonorous tone of great beauty and immense volume, forming a magnificent bass. This also made possible a more uniform playing of notes or intonation, which would lead to a more and more "smooth" orchestral sound that would peak in the 1950s with Eugene Ormandy and the Philadelphia Orchestra and the conducting of Herbert von Karajan with the Berlin Philharmonic.

During this transition period, which gradually eased the performance of more demanding "natural" brass writing, many composers (notably Wagner and Berlioz) still notated brass parts for the older "natural" instruments. This practice made it possible for players still using natural horns, for instance, to perform from the same parts as those now playing valved instruments. However, over time, use of the valved instruments became standard, indeed universal, until the revival of older instruments in the contemporary movement towards authentic performance (sometimes known as "historically informed performance").

At the time of the invention of the valved brass, the pit orchestra of most operetta composers seems to have been modest. An example is Sullivan's use of two flutes, one oboe, two clarinets, one bassoon, two horns, two cornets (a piston), two trombones, drums and strings.

During this time of invention, winds and brass were expanded, and had an increasingly easy time playing in tune with each other: particularly the ability for composers to score for large masses of wind and brass that previously had been impractical. Works such as the Requiem of Hector Berlioz would have been impossible to perform just a few decades earlier, with its demanding writing for twenty woodwinds, as well as four gigantic brass ensembles each including around four trumpets, four trombones, and two tubas.

Other meanings of orchestra

In Ancient Greece, the orchestra was the space between the auditorium and the proscenium (or stage), in which were stationed the chorus and the instrumentalists. The word orchestra literally means "a dancing place".

In some theaters, the orchestra is the area of seats directly in front of the stage (called primafila or platea); the term more properly applies to the place in a theatre, or concert hall reserved for the musicians.

The 21st century marks the first time the orchestra is not limited to humans. On May 13, 2010 the Karmetic Machine Orchestra performed in Los Angeles. In the LA show, it had 10 performers, 3 bots, 43 actuators, and 65 speakers. The robots use sensor data to interpret gestures made by human performers in the orchestra. The robots can be programmed to perform music as well as receive commands from the modified instruments played by their fellow musicians.


Multiple conductors

The techniques of polystylism and polytempo music have recently led a few composers to write music where multiple orchestras perform simultaneously. These trends have brought about the phenomenon of polyconductor music, wherein separate sub-conductors conduct each group of musicians. Usually, one principal conductor conducts the sub-conductors, thereby shaping the overall performance. Some pieces are enormously complex in this regard, such as Evgeni Kostitsyn's Third Symphony, which calls for nine conductors.

Charles Ives often used two conductors, one for example to simulate a marching band coming through his piece. Realizations for Symphonic Band includes one example from Ives.

One of the famous example in the late century orchestral music is Karlheinz Stockhausen's Gruppen, for three orchestras placed around the public. This way, the sound masses could be spacialized, as in an electroacoustic work. Gruppen was premiered in Cologne, in 1958, conducted by Stockhausen, Bruno Maderna and Pierre Boulez. Recently, it was performed by Simon Rattle, John Carewe and Daniel Harding.