Question: Bethany Beardslee has performed classical music by which Austrian composer and theorist?
Context: Pamela Dellal (born 1960) is an American mezzo-soprano in opera and concert, a musicologist and academic teacher.  She has performed classical music from the medieval Hildegard von Bingen to contemporary.  She is on the faculty of the Boston Conservatory, Brandeis University, and the Longy School of Music of Bard College.  She is known for having translated all texts that Johann Sebastian Bach set to music. 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. The Cambridge Buskers were a duo of British musicians, whose career began in the late 1970s and were subsequently called The Classic Buskers.  They performed classical music humorously using many instruments, costumes and props. Paul Poovathingal (born 1961), popularly known as the 'Padum Pathiri' or 'singing priest of India', is a carnatic music (Indian classical music) vocalist, composer and lyricist and is the first vocologist in India.  He is an ordained priest in the religious congregation of the Carmelites of Mary Immaculate (CMI).  He has composed around 1000 songs and released 35 music albums.  He is a disciple of the legendary Carnatic musician and playback singer Padmabhushan K. J. Yesudas and of Chandramana Narayan Namboothiri.  He is the first Indian Christian priest in the world to earn PhD in Carnatic music.  He has performed classical music before A.P.J. Abdul Kalam, President of India and before Bharat Ratna M.S. Subbulakshmi. Sniti Mishra is a trained vocalist in Hindusthani classical music who appeared for the first time in the Zee TV musical reality show, "Sa Re Ga Ma Pa Singing Superstar".  She had been associated with Indo-Swedish Fusion jazz band Mynta.  She has also worked with the percussionist Sivamani and Grammy Award- nominated jazz musician-keyboardist Louis Banks.  She has performed classical and fusion concerts in India and worldwide.  She was honored with 'Baji Rout Samman' for the year 2016 by Utkala Cultural Association, IIT Bombay. Musical composition can refer to an original piece of music, either a song or an instrumental music piece, the structure of a musical piece, or the process of creating or writing a new song or piece of music.  People who create new compositions are called composers in classical music.  In popular music and traditional music, the creators of new songs are usually called songwriters; with songs, the person who writes new words for a song is the lyricist.  "Composition" is the act or practice of creating a song or other piece of music.  In many cultures, including Western classical music, the act of composing typically includes the creation of music notation, such as a sheet music "score", which is then performed by the composer or by other instrumental musicians or singers.  In popular music and traditional music, songwriting may involve the creation of a basic outline of the song, called the lead sheet, which sets out the melody, lyrics and chord progression.  In classical music, orchestration (choosing the instruments of a large music ensemble such as an orchestra which will play the different parts of music, such as the melody, accompaniment, countermelody, bassline and so on) is typically done by the composer, but in musical theatre and in pop music, songwriters may hire an arranger to do the orchestration.  In some cases, a pop or traditional songwriter may not use written notation at all, and instead compose the song in her mind and then play, sing and/or record it from memory.  In jazz and popular music, notable sound recordings by influential performers are given the weight that written or printed scores play in classical music. Arion is a French record company and label founded in 1962 by Ariane Segal.  The label takes its name from the ancient Greek poet and lyre-player, Arion.  In the 1960s and 1970s Arion was seen as one of the most adventurous and innovative independent labels in France with an eclectic catalogue ranging from classical music to ethnic music to jazz.  Its strengths were, and remain, rarely performed classical works and ethnic music. 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." 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. 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.
Answer: Arnold Franz Walter Schoenberg