Answer the following question: Information: - In music, an intermezzo, in the most general sense, is a composition which fits between other musical or dramatic entities, such as acts of a play or movements of a larger musical work. In music history, the term has had several different usages, which fit into two general categories: the opera intermezzo and the instrumental intermezzo. - Opera (English plural: "operas"; Italian plural: "opere" ) is an art form in which singers and musicians perform a dramatic work combining text (libretto) and musical score, usually in a theatrical setting. In traditional opera, singers do two types of singing: recitative, a speech-inflected style and arias, a more melodic style. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance. The performance is typically given in an opera house, accompanied by an orchestra or smaller musical ensemble, which since the early 19th century has been led by a conductor. - Einstein on the Beach is an opera in four acts (framed and connected by five "knee plays" or intermezzos), composed by Philip Glass and directed by theatrical producer Robert Wilson. The opera eschews traditional narrative in favor of a formalist approach based on structured spaces laid out by Wilson in a series of storyboards. The music was written "in the spring, summer and fall of 1975." Glass recounts the collaborative process: "I put [Wilsons notebook of sketches] on the piano and composed each section like a portrait of the drawing before me. The score was begun in the spring of 1975 and completed by the following November, and those drawings were before me all the time." The premiere took place on July 25, 1976, at the Avignon Festival in France. The opera contains writings by Christopher Knowles, Samuel M. Johnson and Lucinda Childs. It is Glass's first and longest opera score, taking approximately five hours in full performance without intermission; given the length, the audience is permitted to enter and leave as desired. - Christopher Knowles (born 1959) is an American poet and painter. He was born in New York City and has received a diagnosis of possible brain damage. He is often referred to as autistic. In 1976, his poetry was used by Robert Wilson for the avant-garde minimalist Philip Glass opera, "Einstein on the Beach". Wilson describes his discovery of the then 13-year-old Knowles in the extended notes to the Tomato Records release of "Einstein on the Beach": In early 1973 a man ... gave me an audio tape ... I was fascinated. The tape was entitled "Emily Likes the TV". On it a young man's voice spoke continuously creating repetitions and variations on phrases about Emily watching the TV. I began to realize that the words flowed to a patterned rhythm whose logic was self-supporting. It was a piece coded much like music. Like a cantata or fugue it worked with conjugations of thoughts repeated in variations; Wilson cast the teenager Knowles in a number of his productions, including "Einstein on the Beach". - Philip Morris Glass (born January 31, 1937) is an American composer. He is considered one of the most influential music makers of the late 20th century. - The Philip Glass Ensemble is a musical group founded by composer Philip Glass in 1968 to serve as a performance outlet for his experimental minimalist music . The Ensemble 's instrumentation became a hallmark of Glass 's early minimalist style . After Glass wrote his first opera , Einstein on the Beach , for the Ensemble in 1976 , he began to compose for other instrumentation more frequently , but he still retains the core ensemble instrumentation . While the Ensemble 's instrumentation has varied over the years , it has generally consisted of amplified woodwinds ( typically saxophones , flutes , and bass clarinet ) keyboard synthesizers , and solo soprano voice ( singing solfege ) . The Philip Glass Ensemble continues to perform and record , under the musical direction of keyboardist Michael Riesman . In 2011 individuals from the ensemble performed a series of concerts in an installation at the Museum of Modern Art in the Temple of Dendur exhibit . The group continues to perform around the world and will continue to present Glass 's works . From 2012 until late 2015 the ensemble has presented , along with many other performers , a revival of Einstein on the Beach which opened in Montpellier , France in 2012 . The production has played London , Reggio Emilia , Toronto , Brooklyn , Berkeley , Paris , Amsterdam , L.A. and other international cities . The revival production of EoB had its final performance in South Korea in October of 2015 . In 2013 the ensemble began to perform Glass 's opera , '' La Belle et la Bete '' again . The opera is set to the visuals of the 1946 Jean Cocteau film , with the help of four vocalists . In early September of 2014 the ensemble performed with Steve Reich and Musicians at the Brooklyn Academy of Music 's '' Next Wave Festival . '' It had been over thirty years since Glass and Reich had shared a stage . - Lucinda Childs (born June 26, 1940) is an American postmodern dancer/choreographer and actress. Her compositions are known for their minimalistic movements yet complex transitions. Childs is most famous for being able to turn the slightest movements into an intricate choreographic masterpiece. Her use of patterns, repetition, and dialect has caused her to have a unique style of choreography that is often imitated for its ability to experiment. After reading the paragraphs above, we are interested in knowing the entity with which 'philip glass ensemble' exhibits the relationship of 'instance of'. Find the answer from the choices below. Choices: - 1937 - acting - art - beach - brain - cantata - city - complex - conductor - dance - dialect - drawing - festival - five - four - fugue - january - june - logic - music - musical - musical ensemble - narrative - november - opera - opera house - performance - play - recitative - release - sense - series - speech - spring - term - text - time - work - year
Answer:
musical ensemble