Question: What nationality was the composer of the opera Lulu ?

Context articles: Alban Berg
Joan Carroll (soprano)
Aatos Tapala
Norine Burgess
Lulu (opera)
Valerie Spencer
Earth Spirit (play)
Anna von Mildenburg
Toni Blankenheim
Lulu Spencer

Alban Maria Johannes Berg ( ; ] ; February 9, 1885 – December 24, 1935) was an Austrian composer of the Second Viennese School.
 His compositional style combined Romantic lyricism with twelve-tone technique.
Joan Carroll (born 27 July 1932) is an American operatic coloratura soprano who appeared in the title role of Alban Berg's "Lulu" at the work's US premiere at the Santa Fe Opera in 1963, and often in opera houses in Europe.
 She premiered vocal music by Aribert Reimann and Wilhelm Killmayer, among others.
Aatos Abel Tapala (born May 5, 1940, Sauvo) is a Finnish actor, opera singer and, for a time, a soloist for the Finnish National Opera from 1965-1972.
 Throughout the course of his lifetime Tapala has participated in various roles in operas and musicals such as "Tamino" in "Taikahuilu", "Basilio" in "Figaron häät", "Perämies" in "Lentävä hollantilainen", "Aegisthus" in "Elektra", "Maalari" in Lulu, "Šemeikka" in "Juha" and "Tony" in "West Side Story".
Norine Burgess is a Canadian singer.
 She is a graduate of the University of Calgary and the University of Toronto’s Opera School, mezzo-soprano.
 She received additional training as a member of the Canadian Opera Company (COC) Ensemble where she appeared in Electra, Suor Angelica, Lulu and Der Rosenkavalier.
 Ms. Burgess also performed Le Nozze di Figaro(Cherubino), Ariadne auf Naxos (Dryad), La Traviata(Flora) and Die Zauberflöte (Second Lady) with the COC.
 Additional operatic successes include Le Nozze di Figaro (Cherubino) and Carmen (Mercedes) with the Vancouver Opera, Fenena in Nabucco with Manitoba Opera, Albert Herring (Nancy) with the Calgary Opera and many appearances with the Edmonton Opera.
Lulu (composed from 1929–1935, premièred incomplete in 1937 and complete in 1979) is an opera in three acts by Alban Berg.
 The German-language libretto was adapted by Berg himself from Frank Wedekind's two "Lulu" plays, "Erdgeist" ("Earth Spirit", 1895) and "Die Büchse der Pandora" ("Pandora's Box", 1904).
 Berg died before completing the third and final act, and in the following decades, the opera was typically performed incomplete.
 Since its publication in 1979, however, the Friedrich Cerha orchestration has become popular.
 Theodor W. Adorno wrote "The opera "Lulu" is one of those works that reveals the extent of its quality the longer and more deeply one immerses oneself in it."
Valerie Spencer is a fictional character from "General Hospital", an American soap opera on the ABC network, portrayed by Brytni Sarpy.
 Introduced as the niece of the legendary Luke Spencer (Anthony Geary), Valerie is the daughter of the late Pat Spencer (Dee Wallace).
 Upon losing her mother, Valerie relocates to Port Charles and moves in with her cousin, Lulu Spencer (Emme Rylan), and bonds with her husband Dante Falconeri (Dominic Zamprogna).
 The two end up having a one-night stand, only for Dante to reconcile with Lulu and Valerie briefly dates Lulu's ex-boyfriend Dillon Quartermaine (Robert Palmer Watkins).
Earth Spirit (1895) ("Erdgeist") is a play by the German dramatist Frank Wedekind.
 It forms the first part of his pairing of 'Lulu' plays; the second is "Pandora's Box" (1904), both depicting a society "riven by the demands of lust and greed".
 In German folklore an "erdgeist" is a gnome, first described in Goethe's "Faust" (1808).
 Together with "Pandora's Box", Wedekind's play formed the basis for the silent film "Pandora's Box" (1929) starring Louise Brooks and the opera "Lulu" by Alban Berg (1935, premiered posthumously in 1937).
Anna von Mildenburg (November 29, 1872 – January 27, 1947) was an eminent Wagnerian soprano of Austrian nationality.
 Known as Anna Bahr-Mildenburg after her 1909 marriage, she had been a protégé of the composer/conductor Gustav Mahler during his musical directorship at the Hamburg State Opera.
 In 1898, Mahler took her to the Vienna Opera, where she established herself as one of the great stars during his celebrated tenure there as music director.
Toni Blankenheim (12 December 192111 December 2012) was a German operatic baritone.
 He notably sang major roles in the operas of Alban Berg: the title role of "Wozzeck", produced for television in 1970 (later issued on DVD), and the role of Schigolch in the 1981 recording of "Lulu" which won a Grammy Award for Best Opera Recording.
 He is also on record singing the role of Alberich at Bayreuth.
 His memorable Beckmesser in Wagner's "Die Meistersinger von Nürnberg" with the Hamburg State Opera has been preserved and is available on DVD.
 This performance is evidence of Blankenheim's charismatic stage presence and acting gifts.
Lulu Spencer is a fictional character from "General Hospital", an American soap opera on the ABC network, portrayed by Emme Rylan.
 Previously, Lulu was portrayed by child actress, Tessa Allen from 2004 to 2005.
 The role was most notably portrayed by Julie Marie Berman from 2005 to 2013.
 Rylan stepped into the role in 2013.