Question: Bethany Beardslee has performed classical music by which Austrian composer and theorist?

full_context: Document 1: Second Viennese School: The Second Viennese School (German: Zweite Wiener Schule, Neue Wiener Schule ) is the group of composers that comprised Arnold Schoenberg and his pupils and close associates in early 20th century Vienna, where he lived and taught, sporadically, between 1903 and 1925. Their music was initially characterized by late-Romantic expanded tonality and later, following Schoenberg's own evolution, a totally chromatic expressionism without firm tonal centre, often referred to as atonality; and later still, Schoenberg's serial twelve-tone technique. Though this common development took place, it neither followed a common time-line nor a cooperative path. Likewise, it was not a direct result of Schoenberg's teaching—which, as his various published textbooks demonstrate, was highly traditional and conservative. Schoenberg's textbooks also reveal that the Second Viennese School spawned not from the development of his serial method, but rather from the influence of his creative example.
Document 2: Arnold Schoenberg Choir: The Arnold Schoenberg Choir (German: "Arnold Schoenberg Chor" ) is a Viennese/Austrian choir which was founded 1972 by Erwin Ortner, who is still its artistic director. The choir has a high reputation both among conductors and among critics and the musical scene in general. All members of the choir have broad experience and expertise in vocal music; most of them have graduated from or are currently studying at the Vienna University of Music and Performing Arts. The choir is named after Viennese composer Arnold Schoenberg.
Document 3: Arnold Schoenberg: Arnold Franz Walter Schoenberg or Schönberg ( ; ] ; 13 September 187413 July 1951) was an Austrian composer, music theorist, and painter. He was associated with the expressionist movement in German poetry and art, and leader of the Second Viennese School. With the rise of the Nazi Party, Schoenberg's works were labelled degenerate music, because they were modernist, atonal and what even Paul Hindemith called "sonic orgies" and "decadent intellectual efforts". He emigrated to the United States of America in 1934.
Document 4: Barbara Kolb: Barbara Kolb (b. Hartford, Connecticut, February 10, 1939) is an American composer. Her music uses sound masses and often creates vertical structures through simultaneous rhythmic or melodic units (motifs or figures). Barbara's musical styling can be identified by her use of colorful textures, impressionistic touch, and atonal vocabulary, with influences stemming from literary and visual arts. She was the first American woman composer to win the Rome Prize. She received her B.M. (cum laude, 1961) and M.M. degrees (1964) from the Hartt College of Music (now The Hartt School) at the University of Hartford, and studied with Arnold Franchetti, Lukas Foss and Gunther Schuller. Following her various degrees, Kolb relocated to Vienna, Austria from 1966-1967 with a Fulbright Fellowship grant. She was the first female American composer to win the Rome Prize [Prix de Rome], in 1969. From 1979 - 1982, Kolb served as the artistic director of contemporary music at the Third Street Music School Settlement, where she presented the "Music New to New York" concert series. Additionally, she has had a professional teaching career teaching at Rhode Island College and Eastman School of Music as a visiting professor in Composition. A selection of Barbara's compositions were featured at the Kennedy Center, performed by the "Theatre Chamber Players" as part of the Boston Modern Orchestra Project. However, Kolb was not only known as a composer; but she was also proficient at the Eb clarinet.
Document 5: Anton Webern: Anton Friedrich Wilhelm (von) Webern (] ; 3 December 188315 September 1945) was an Austrian composer and conductor. Along with his mentor Arnold Schoenberg and his colleague Alban Berg, Webern was at the core among those within and more peripheral to the circle of the Second Viennese School, including Ernst Krenek and Theodor W. Adorno. As an exponent of atonality and twelve-tone technique, Webern exerted influence on contemporaries Luigi Dallapiccola, Křenek, and even Schoenberg himself. As a tutor, Webern guided and variously influenced Arnold Elston, Frederick Dorian (Friederich Deutsch), Matty Niël, Fré Focke, Karl Amadeus Hartmann, Philipp Herschkowitz, René Leibowitz, Humphrey Searle, Leopold Spinner, and Stefan Wolpe.
Document 6: Philomel (Babbitt): Philomel, a serial composition composed in 1964, combines synthesizer with both live and recorded soprano voice. It is Milton Babbitt’s best-known work and was planned as a piece for performance at the Metropolitan Museum of Art, funded by the Ford Foundation and commissioned for soprano Bethany Beardslee. Babbitt created "Philomel" in the Columbia-Princeton Electronic Music Center, of which he was a founding member.
Document 7: Eunice Alberts: Eunice Alberts (1927–2012) was an American contralto who had an active career as a concert soloist and opera singer during the 1950s through the 1980s. She began her career as a concert soloist with the Boston Symphony Orchestra at the young age of 19 and quickly became a lauded oratorio singer during the late 1940s and the early 1950s. She began her opera career with the New York City Opera in 1951. She went on to have a successful opera career with companies throughout the United States, ultimately forging a strong partnership with Sarah Caldwell's Opera Company of Boston that lasted from 1961 to 1988. She notably sang in a number of United States premieres in Boston and appeared in a few world premieres in New York City. Although Alberts made a number of impressive achievements in the field of opera, her legacy remains in the numerous appearances and recordings she made with major symphony orchestras in the United States. She was particularly successful as a soloist in the great choral works of J.S. Bach, Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven.
Document 8: Bethany Beardslee: Bethany Beardslee (born December 25, 1925) is an American soprano particularly noted for her collaborations with major 20th-century composers, such as Igor Stravinsky, Milton Babbitt, Pierre Boulez, George Perle, Sir Peter Maxwell Davies and her performances of great contemporary classical music by Arnold Schoenberg, Alban Berg, Anton Webern. Her legacy amongst midcentury composers was as a "composer's singer"—for her commitment to the highest art of new music. Milton Babbitt said of her "She manages to learn music no one else in the world can. She can work, work, work." In a 1961 interview for Newsweek, Beardslee flaunted her unflinching repertoire and disdain for commercialism: "I don't think in terms of the public... Music is for the musicians. If the public wants to come along and study it, fine. I don't go and try to tell a scientist his business because I don't know anything about it. Music is just the same way. Music is "not" entertainment."
Document 9: Schoenberg hexachord: 6-Z44 (012569), known as the Schoenberg hexachord, is Arnold Schoenberg's signature hexachord, as one transposition contains the pitches [A], Es, C, H, B, E, G (A. Schoenberg), E♭ , B, and B♭ being Es, H, and B in German.
Document 10: Women in music: Women in music describes the role of women as composers, songwriters, instrumental performers, singers, conductors, music scholars, music educators, music critics/music journalists and other musical professions. As well, it describes music movements (e.g., women's music, which is music written and performed by women for women), events and genres related to women, women's issues and feminism. In the 2010s, while women comprise a significant proportion of popular music and classical music singers, and a significant proportion of songwriters (many of them being singer-songwriters), there are few women record producers, rock critics and rock instrumentalists. Notable women artists in pop, such as Bjork and Lady Gaga have commented about sexism and gender discrimination in the music industry. In classical music, although there have been a huge number of women composers from the Medieval period to the present day, women composers are significantly underrepresented in the commonly performed classical music repertoire, music history textbooks and music encyclopedias; for example, in the "Concise Oxford History of Music", Clara Schumann is one of the only female composers who is mentioned.
Document 11: Cathy Berberian: Catherine Anahid Berberian (July 4, 1925 – March 6, 1983) was an American mezzo-soprano and composer based in Italy. She interpreted contemporary avant-garde music composed, among others, by Luciano Berio, Bruno Maderna, John Cage, Henri Pousseur, Sylvano Bussotti, Darius Milhaud, Roman Haubenstock-Ramati, and Igor Stravinsky. She also interpreted works by Claudio Monteverdi, Heitor Villa-Lobos, Kurt Weill, Philipp Zu Eulenburg, arrangements of songs by The Beatles, and folk songs from several countries and cultures. As a composer, she wrote "Stripsody" (1966), in which she exploits her vocal technique using comic book sounds (onomatopoeia), and "Morsicat(h)y" (1969), a composition for the keyboard (with the right hand only) based on Morse code.
Document 12: Theodor W. Adorno: Theodor W. Adorno ( ; ] ; born Theodor Ludwig Wiesengrund; September 11, 1903 – August 6, 1969) was a German philosopher, sociologist, and composer known for his critical theory of society.
Document 13: A Survivor from Warsaw: A Survivor from Warsaw, Op. 46, is a cantata by the Los Angeles-based Austrian composer Arnold Schoenberg, written in tribute to Holocaust victims. The main narration is unsung; “never should there be a pitch” to its solo vocal line, wrote the composer.
Document 14: Pierre Boulez: Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions. He was one of the dominant figures of the post-war classical music world.
Document 15: Kathleen Battle: Kathleen Deanna Battle (born August 13, 1948) is an American operatic soprano known for her distinctive vocal range and tone. Born in Portsmouth, Ohio, Battle initially became known for her work within the concert repertoire through performances with major orchestras during the early and mid-1970s. She made her opera debut in 1975. Battle expanded her repertoire into lyric soprano and coloratura soprano roles during the 1980s and early 1990s until her eventual dismissal from the Metropolitan Opera in 1994. After a 22-year absence from the Met, Battle performed a concert of spirituals at the Metropolitan Opera House in November 2016.
ground_truth: Arnold Franz Walter Schoenberg