Question: What's the main genre for the composer of Air Music?

full_context: Document 1: Octet/Music for a Large Ensemble/Violin Phase: The album consists of commissioned works by Steve Reich. "Music for a Large Ensemble" was commissioned by the Holland Festival, "Violin Phase" was an earlier work that dealt with repetition.
Document 2: 1976 Pulitzer Prize: Air Music by Ned Rorem (Boosey & Hawkes) First performed by the Cincinnati Symphony Orchestra on December 5, 1975. It is subtitled Ten Etudes of Orchestra.
Document 3: Christmas in July: Werther, an 1892 opera with libretto by Édouard Blau, Paul Milliet, and Georges Hartmann, had an English translation published in 1894 by Elizabeth Beall Ginty. In the story, a group of children rehearses a Christmas song in July, to which a character responds: ``When you sing Christmas in July, you rush the season. ''It is a translation of the French:`` vous chantez Noël en juillet... c'est s'y prendre à l'avance.'' This opera is based on Goethe's The Sorrows of Young Werther. Christmas features in the book, but July does not.
Document 4: The Ghosts of Versailles: The Ghosts of Versailles is an opera in two acts, with music by John Corigliano to an English libretto by William M. Hoffman. The Metropolitan Opera had commissioned the work from Corigliano in 1980 in celebration of its 100th anniversary, with the premiere scheduled for 1983. Corigliano and Hoffman took as the starting point for the opera the play "La Mère coupable" ("The Guilty Mother") by Pierre Beaumarchais. They took seven years to complete the opera, past the initial deadline. The opera received its premiere on December 19, 1991, at the Metropolitan Opera, with the production directed by Colin Graham. The premiere run of seven performances was sold out. The original cast included Teresa Stratas, Håkan Hagegård, Renée Fleming, Graham Clark, Gino Quilico, and Marilyn Horne. The Metropolitan Opera revived the opera in the 1994/1995 season.
Document 5: Amadeo Roldán: Roldán's compositions included "Overture on Cuban Themes" (1925), three little poems: ("Oriente", "Pregón", "Fiesta negra": 1926), and two ballets: "La Rebambaramba" (a ballet colonial in two parts: 1928) and "El milagro de Anaquille" (1929). There followed a series of "Rítmicas" (1930), "Poema negra" (1930) and "Tres toques" (march, rites, dance) (1931). The fifth and sixth of his "Rítmicas", composed around the same time as Edgard Varèse's "Ionisation", were among the first works in the Western classical music tradition scored for percussion ensemble alone. In "Motivos de son" (1934) he wrote eight pieces for voice and instruments based on the poet Nicolas Guillen's set of poems with the same title. His last composition was two "Piezas infantiles" for piano (1937). His work was regularly featured in concerts sponsored by the Pan-American Association of Composers, founded by Henry Cowell, including the inaugural, March 1929 performance in New York.
Document 6: Rosemarie Wright: Wright studied at the Royal Academy of Music with Patrick Cory and Harold Craxton, winning many prizes including the Chappell Silver Medal and Tobias Matthay Fellowship. Her later studies were with Bruno Seidlhofer at the Staatsakademie in Vienna, and with Edwin Fischer and Wilhelm Kempff. She studied chamber music with the cellist Pablo Casals. Wright won the Haydn Prize in the International Haydn-Schubert Competition in Vienna in 1959, and in 1960 became the first British pianist ever to win the Bosendorfer Prize.
Document 7: The Canticle of the Sun (Sowerby): The Canticle of the Sun is a musical composition by Leo Sowerby (1895–1968) setting Matthew Arnold's English translation of Francis of Assisi's "Canticle of the Sun" for chorus and orchestra in 1945; the work was awarded the Pulitzer Prize for Music the following year. The first performance was in New York at Carnegie Hall by the Schola Cantorum and the New York Philharmonic on April 16, 1945. The first recording of it by Chicago's Grant Park Orchestra and Chorus under Carlos Kalmar was released in June 2011. The piece was commissioned by the Alice M. Ditson Fund.
Document 8: The Beggar's Opera: The Beggar's Opera is a ballad opera in three acts written in 1728 by John Gay with music arranged by Johann Christoph Pepusch. It is one of the watershed plays in Augustan drama and is the only example of the once thriving genre of satirical ballad opera to remain popular today. Ballad operas were satiric musical plays that used some of the conventions of opera, but without recitative. The lyrics of the airs in the piece are set to popular broadsheet ballads, opera arias, church hymns and folk tunes of the time.
Document 9: Regina (Lortzing): Regina is an opera in three acts by Albert Lortzing who also wrote the libretto. It was composed in 1848, the year of the revolutions in the German states and during Europe's "Springtime of the Peoples" (), but it was not premiered until 21 March 1899 when it was performed at the Berlin State Opera. It is a "" (liberation opera) and the first opera which takes place in a factory with workers who strike and chant freedom songs. The first production of the original opera was in 1998 at the Musiktheater im Revier in Gelsenkirchen.
Document 10: Music for 18 Musicians: Music for 18 Musicians is a work of musical minimalism composed by Steve Reich during 1974–1976. Its world premiere was on April 24, 1976, at The Town Hall in New York City. Following this, a recording of the piece was released by ECM New Series in 1978.
Document 11: Labyrinth (opera): Labyrinth is an opera in one act by composer Gian Carlo Menotti. The work was commissioned for television by the NBC Opera Theatre and uses an English language libretto by the composer. Unlike Menotti's previous television operas, such as "Amahl and the Night Visitors", this opera was written with no intention of being moved to live stage performance later. Menotti intended for this work to utilize the special effects unique to television which could not be recreated in live theatre. As a result, NBC's television production of the opera is the only performance the work has received. At its premiere in March 1963 the opera was mainly criticized by the press for its trite use of allegory and music which rejected the avant-garde in favour of romanticism. Critic Harold C. Schonberg stated in his review in "The New York Times" that, "Menotti falls back on the procedures he has always used: the scraps of canonic imitation, the stretches of parlando, the Puccini like melodies, the banal waltz themes... [It] ended up an allegory that had all the dimension of a Mobius strip: an example of slick television and cinema of the 1960s wedded pretty much to music of the 1890s... On the whole "Labyrinth" is one of the thinnest musical concoctions Menotti has ever put together.
Document 12: Hérodiade: The libretto is a retelling of the story of John the Baptist, Salome, Herod Antipas and Herodias, but is strikingly less psychological and bloody than Richard Strauss's "Salome", which is based on a text by Oscar Wilde. The opera premiered in Brussels because Auguste Vaucorbeil, Manager of the Paris Opera house refused to stage the work; "I do like your music," he had said to Massenet, "but as for the libretto, you badly need an author who knows how to build the skeleton of a play."
Document 13: Orchestra 2001: James Freeman founded Orchestra 2001 in 1988 as its artistic director and conductor, and continues to serve in both posts. The ensemble is noted for performances of works by composers based in the Philadelphia region, in particular George Crumb. Orchestra 2001 has performed many of Crumb's works since the ensemble's inception. These have included premieres of his "American Songbooks" series of compositions and other works such as "Voices from a Forgotten World". The orchestra has also premiered compositions by other composers such as:
Document 14: Bertha (opera): Bertha is an opera in one act, with music by Ned Rorem to an English libretto by Kenneth Koch, an original work parodying Shakespeare's histories. Rorem wrote the work originally at the request of the Metropolitan Opera (Met) Studio in the 1960s, intended as an opera for children. However, the Met studio rejected the work. The work was premiered at Alice Tully Hall in New York City on November 25, 1973 with Beverly Wolff in the title role.
Document 15: Double Sextet: Double Sextet is a composition by Steve Reich scored for two sextets of flute, clarinet, violin, cello, vibraphone and piano. It won the 2009 Pulitzer Prize for Music, the first for the composer. With funds from the Carnegie Hall Corporation, The Abe Fortas Memorial Fund of the John F. Kennedy Center for the Performing Arts, Liverpool Culture Company – European Capital of Culture 2008, The Modlin Center for the Arts at the University of Richmond, Orange County Performing Arts Center, The University of Cincinnati College-Conservatory of Music – Music 08 Festival the piece was commissioned in 2007 by Eighth Blackbird who performed its premiere in 2008, at the University of Richmond in Virginia.. The Liverpool Culture Company (Gordon Ross, music programme manager) was the only non-US commissioning organisation and hosted the rest-of-the-world premiere at St. George's Concert Room, Liverpool on the 21st of November 2008 as part of Liverpool's European Capital of Culture celebrations.
ground_truth: opera
sub_queries: who won the pulitzer in 1976 for air music Answer: Ned Rorem
Ned Rorem >> genre Answer: opera