Virtual Orchestra

Virtual Orchestra

Virtual Orchestra is a term used to identify a variety of different types of technology and art forms. Most commonly used to refer to orchestral simulation, either for pre-recorded or live environments, it also has been used to describe other activities, such as IRCAM’s Virtual Orchestra database.


Due to the development of high capacity samplers, the recording of large instrumental sample libraries, and the capabilities of modern sequencers, the art of simulating traditional orchestra performances has become quite sophisticated. Although the process of developing a particular score requires great skill and sensitivity, and can take a long time, the method is artistically more flexible and economical than using a full complement of acoustic musicians.Fact|date=October 2007 For this reason, much of the music heard on television, and in cinema, uses some form of Virtual Orchestra technology.

The term Virtual Orchestra is more accurately used today to describe the real time simulation of the traditional acoustic orchestra in the live performance genres such as musical theater, ballet, and opera. This use of Virtual Orchestra emphasizes the interactive capabilities of the technology as opposed to non-real time and studio-based genres such as film music. The term Virtual Orchestra implies a high degree of human interaction during live performance and suggests that the method simulates both the sound and behavior of an acoustic orchestra. The behavioral characteristics would include the ability to follow tempo in real time while making simultaneous adjustments to various expressive parameters including volume, articulation, phrasing, etc… While the definition has expanded to include creative and research activity in a broader aesthetic range well beyond traditional orchestral simulation, the ability to interact with the sonic and behavioral elements in real time via human performance has remained one the requisite attributes of a Virtual Orchestra.

Its use, particularly in live performance, has been controversial, as many acoustic musicians see it as a threat to their jobs. There has been a history of union pickets at performances that use or intend to use this technology, perhaps most notably the March 2003 Broadway Musician’s strike, that began as a dispute over pit minimums, and rapidly escalated into a referendum on this type of use. Other disputes arose in London’s West End, when sir Cameron Mackintosh moved the long-running production of Les Miserables from the Palace to the Queen’s Theatre, necessitating a reduction in orchestra size due to space issues, and several productions by the Opera Company of Brooklyn.

Virtual Orchestra Philosophy


When the Virtual Orchestra first appeared in the late 1980s it was highly criticized for focusing on the simulation of the acoustic orchestra. This criticism was not initially leveled by instrumental musicians, but by the computer music community. The application of computer music technology to orchestral simulation was difficult to embrace and out of phase with a philosophical perspective that followed an historical lineage dating back to the early 1950s. The philosophical and developmental trajectory of the electronic music art form was set on its course in the 1950s and first articulated by the early European electronic music artists such as Eimert, Stockhausen, Krenek, Koenig, and Boulez. In the words of Herbert Eimert:

:(In electronic music) “… there has been no extension of traditional procedure. By the radical nature of its technical apparatus, electronic music is compelled to deal with sound phenomena unknown to musicians of earlier times. The disruption by the electronic means, of the sound world as we have known it leads to new musical possibilities, the ultimate consequences of which can hardly yet be appreciated……here we touch on a most widespread misconception: namely, the idea that one can make music ‘traditionally’ with electronic means.” [die Reihe, Electronic Music, Universal Edition, 1955.]

The aesthetic foundation of electronic music began to propagate from the post-World War II studios of Europe. An aesthetic propagation that would not be challenged until the introduction of live performance synthesizers (MiniMoog) in 1970. The trajectory set in motion by the Europeans would split and divide into a myriad of paths at the hands of the transistor, integrated circuits, computers, networks, satellites and the internet. Yet even into the late 1980s and beyond, the Virtual Orchestra was criticized for its divergence from the original aesthetic trajectory. The criticism suggested that it was unimaginative to set the Virtual Orchestra’s sights on a target of simulation when its potential could be better served by allowing it to function idiomatically while moving the art form forward along the original trajectory of experimentalism. But it was precisely the constraints of, and adherence to this experimentalism that had confined the electronic music art form to the margins of the music industry and prevented its use in the mainstream.

While the experimentalists intended to move the art forward by leaps, and emphasize the aesthetic and technical disconnect between composers, works, studios, and strategies, the Virtual Orchestra set out to establish the connection and evolutionary continuity of the technology. This meant propagating the technology on a wide scale which necessitated a high degree of standardization and an eventual common practice. Furthermore, the Virtual Orchestra pioneers sought to decouple the technology from an aesthetic altogether. This required a sophisticated and standardized technical platform that would exist independently of a specific work of electronic music or from an aesthetic position.

The evolutionary propagation of the Virtual Orchestra technology was not predicated on the experimental European trajectory, but the trajectory set in motion by the traditional acoustic instrument developers hundreds of years earlier. The Virtual Orchestra philosophy rests on the assumption that while the exact simulation of acoustic instruments may be unattainable, some degree of understanding and implementation of the process is crucial to the evolutionary development of the technology. This developmental approach was expressed eloquently by Lloyd Watts in regard to computational intelligence and brain function:

"The model must operate at sufficient resolution to be comparable to the real system, so that we build the right intuitions about what information is represented at each stage..... the model development necessarily begins at the boundaries of the system where the real system is well understood, and then can advance into the less-understood regions….In this way, the model can contribute fundamentally to our advancing understanding of the system, rather than simply mirroring the existing understanding." [Visualizing Complexity in the Brain, Computational Intelligence: the Experts Speak, D. Fogel and C. Robinson, eds. Hoboken, N.J.: IEEE Press/Wiley, 2003, pp.. 45-56. ]

From this perspective, it was inevitable, if not deterministic, that the early years of Virtual Orchestra development would explore the methodical simulation of acoustic instruments. From an evolutionary perspective, it was impossible to propagate sophisticated computer music technology without following the lineage and trajectory set out by the acoustic instrument tradition. As the Virtual Orchestra continues to evolve, it seems certain that its sonic evolution well continue, move beyond simulation, and target strategies that are more idiomatic to the technology.

Live Performance Instrument

The Virtual Orchestra is technology capable of simulating the sound and behavior of a traditional acoustic orchestra. That includes the ability to follow a conductor’s tempo and to respond to a variety of expressive musical nuances in real time. Opponents of the technology believe that the Virtual Orchestra does not qualify as a musical instrument because its output is far too complex to be under the control of a single performer. In order to achieve the increased gains in productivity, the system is viewed as relying on automation. More specifically, the one-to-one relationship between the input and output that has historically defined traditional musical instruments appears to have been breached. The traditional one-to-one relationship between performer and instrument implies that the instrument was designed within the performance capabilities of a human performer.

The argument against the acceptance of electronic devices as musical instruments can be traced back to the 1930s. The Russian music critic, Boris de Schloezer, in reaction to the Theremin, may have been the first to articulate the argument against the acceptance of electronic devices as musical instruments and discuss the imbalance between an acoustic and an electronic instrument. The traditional acoustic instrument, he stated, bears a “…direct, physical relationship between the player and the sound-producing device.”Patrick Rashleigh, York University, Toronto, Canada. [] ] Furthermore, he suggested that an instrument “… is in intimate contact with the human body and respond(s) to its slightest impulses.” Moreover, de Schloezer’s most direct statement in opposition to electronic instruments proclaimed “the mechanization of music actually means the increase in the number of intermediaries between the producer of music and the listener.” However, Leon Theremin disagreed and saw the “….. electrical apparatus tapping more directly into the performer’s thoughts and intentions.” The noted Russian composer and theorist, Joseph Schillinger, understood the conquest of electricity as “the most important evolutionary step in the entire span of history.” Schillinger’s ideas about the subject are clearly articulated in his famous article from 1931 entitled: “Electricity, a Musical Liberator.”

In relation to the Virtual Orchestra, it is precisely de Schloezer’s so-called ‘intermediaries’ that have fueled the controversy surrounding the technology. If the ‘intermediaries’ contribute to the production of music, and if the ‘intermediaries’ exist with some degree of autonomy, then it is reasoned that their function must reside in either some level of digital circuitry or in an algorithm. All of which would suggest a high degree of automation or predetermined behavior and in violation of the one-to-one relationship indigenous to traditional musical instruments.

The Virtual Orchestra, while preserving much of the traditional tactile instrumental interface, requires a redefinition of the term musical instrument. The amount of concurrent decision-making and simultaneous physical activity required to perform an instrument with these extended capabilities would certainly exceed the human bandwidth of the performer. Thus, the notion of interfacing with the instrument exclusively through physical gesture would be impossible. Therefore, the virtual orchestra incorporates intermediaries that demarcate between parameters that are under the control of the performer and those that are deterministic. While this demarcation usually happens to some ‘degree’ along a constantly changing continuum, parameters whose outcome have a high degree of certainty, at any moment, are more susceptible to automation. Those parameters whose outcome is more uncertain would be left to the performer’s control, discretion, and interpretation. It is also reasoned that parameters of high uncertainty carry the most expressive potential and are thus more effectively handled by a performer. The end result is an instrument that continually negotiates the performer’s role and relationship to the instrument in order to maximize the performer’s skill, intuition, and human bandwidth.


The first use of Virtual Orchestra technology in live performance occurred on February 12, 1987. Christopher Yavelow's opera, "Countdown", was performed by the Boston Lyric Opera Company under the direction of John Balme. The downbeats of Balme's baton were synchronized through a modifed Roland SBX80 to the sequencer driving a fully-loaded Kurzweil K250 that had been enhanced with some extra proprietary orchestral sounds. The K250 sampler, a virtual orchestra in a box, was hidden behind the curtain, and was so convincing that the audience assumed they were listening to a taped recording of live musicians playing the score. The commission was sponsored by "Opera in the Eighties and Beyond" through Opera America in conjunction with The National Endowment for the Arts. The event was covered by "Macworld" [ Joe Matazzoni "Opera in the Eighties" "Macworld" magazine: Vol. 4, No. 8 (1987)] , "Opera News" [Deborah Grace Winer “Music by Mouse” Opera News: Vol 54, No. 14 (March 1990)] , Personal Publishing [Dave Brogin “Desktop Publishing and Opera: Composer Christopher Yavelow’s COUNTDOWN” Personal Publishing (1990)] , Kurzweil Generation [Pat Camarena “User Profile: Christopher Yavelow” Kurzweil Generation: Vol. 1, No. 2 (1987) ] , and the "Journal of the Audio Engineering Society" [“Traditional and Computer-Assisted Composer” Journal of the AES: Vol. 35, No. 3 (1987)] , but it received additional publicity through the popular TV show NOVA on which Yavelow demonstrated the "orchestra in a box" with its inventor Ray Kurzweil fielding questions. The following year, Countdown won first prize in the Virginia Opera Society's "New One-Act Operas" competition. [ [ "Central Opera Service Bulletin"] , Fall/Winter, 1988-89, p. 5.] The society mounted a full production of the opera in 1988, again, to the accompaniment of Yavelow's virtual orchestra. On December 1, 1994, nearly eight years after its premiere, the Boston Lyric Opera recording of "Countdown" [ [ "Countdown: An opera for the nuclear age"] on the composer's web site, with libretto and online streaming of the opera] became the first opera in cyberspace, generating a week of coverage on MSNBC in early 1995. Prevailing technology required segmenting the opera into 16 ".au" files (the mp3 format hadn't been invented yet), with the libretto and notes divided accordingly. However, in 2004, to commemorate of the tenth anniversary of the first internet opera, the composer replaced the original files with a single streaming mp3 of higher quality. Otherwise, the site has remained unchanged since its launch, a monument to the first use of Virtual Orchestra technology in live performance as well as the first opera on the internet.


External links

* [ Virtual] Clearing house for a variety of information
* [ IRCAM's Virtual Orchestra] IRCAM page providing access to their virtual orchestra database project.
* [] Frederick Bianchi
* [ Orchestral Simulation] Tips for better orchestral simulation

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