Question: Which German-speaking Swiss writer inspired Burkhard Stangl to create the famed "schnee" duet?

full_context: Document 1: Hermann Hesse: Hermann Karl Hesse (] ; 2 July 1877 – 9 August 1962) was a German-born poet, novelist, and painter. His best-known works include "Demian", "Steppenwolf", "Siddhartha", and "The Glass Bead Game", each of which explores an individual's search for authenticity, self-knowledge and spirituality. In 1946, he received the Nobel Prize in Literature.
Document 2: Burkhard Stangl: Burkhard Stangl (born 6 November 1960 in Eggenburg, Lower Austria) is a composer and musician, currently residing in Vienna, Austria. Playing primarily guitar and electronics, he is a prolific performer in the world of electro-acoustic improvisation, having participated in over 50 recordings. One of his most noted recordings is "schnee", a duet with Cristof Kurzmann, inspired by four films and a quote from writer Robert Walser. It has been recorded live, as "schnee_live", and has spawned a similarly themed "meta-song suite," "neuschnee". His 1997 opera "Der Venusmond" was recorded partially on the observation deck of the Empire State Building.
Document 3: Robert Walser (writer): Robert Walser (15 April 1878 – 25 December 1956) was a German-speaking Swiss writer.
Document 4: Robert Walser (musicologist): Robert Walser is an American musicologist associated with the "new musicology". He is author of the book "Running With the Devil: Power, Gender, and Madness in Heavy Metal Music", concerning heavy metal music. Walser currently is a member of the faculty and director of the Center for Popular Music Studies at Case Western Reserve University.
Document 5: Katharina Klement: Katharina Klement (born December 1, 1963 in Graz), is an Austrian composer and performer, currently residing in Vienna, Austria. She studied piano, electroacoustic music and composition, with Dieter Kaufmann at Universität für Musik und darstellende Kunst in Vienna. Her work is connecting the fields of notated and improvised, instrumental and electronic music. Particular interest lays on the piano and its extended playing techniques. She also does sound installations and is the founder and member of numerous ensembles for improvised music: "subshrubs" (Angélica Castelló, Maja Osojnik, Tamara Wilhelm, Katharina Klement), "Klement-Siewert" (duo with Martin Siewert), "deepseafish-K" (juun, Manon Liu Winter, Katharina Klement), "REDOX" (Annette Giesriegl, Kaja Farszky, Katharina Klement), "LEFT" (Isabelle Duthoit, Matija Schellander, Katharina Klement), "Ernst-Klement-Stangl" (Katharina Ernst, Burkhard Stangl, Katharina Klement), "t(w)o wanderers" (duo with Lynn Book).
Document 6: Carl Seelig: Carl Seelig (born May 11, 1894, Zurich; died February 15, 1962, Zurich) was a German-Swiss writer and patron. He was best known as a friend, promoter and guardian of Robert Walser and the first biographer of Albert Einstein.
Document 7: Otto F. Walter: Otto F. Walter (5 June 1928 born as "Otto Friedrich Walter" – 24 September 1994) was a Swiss publisher (Walter Verlag), author and novelist, which is well known in the German language countries. Otto Friedrich Walter was the younger brother of Silja Walter, a Benedictine nun in the Fahr Abbey and also a popular writer.
Document 8: Robert Shvarc: Robert Shvarc (10 December 1932 – 25 April 2003) born in Sarajevo of Bosnia, 10 December 1932, is a Hebrew and Albanian, recognized as one of the best translators from German of the 20th century and beginning of new millennium, writer and poet. His parents were respectively mother from Elbasan and father an Hebrew from Austria and lived in Shkodra, Albania. There Robert Shvarc grew up as a lover of Albanian mother's language and is the first who brought for the Albanian reader some masterpieces of literature as the novels of Gabriel García Márquez, Erich Maria Remarque, Lion Feuchtwanger, dramas of Bertolt Brecht; books of poetry from Goethe, Schiller and Heine. Also Shvarc translated in German best books of many Albanian poets and writers.
Document 9: Six Celan Songs • The Ballad of Kastriot Rexhepi: Six Celan Songs • The Ballad of Kastriot Rexhepi is the 54th album release by Michael Nyman, who not only composed but also conducted both the works on the album. The first, a setting of poetry by Paul Celan, was originally recorded by Ute Lemper and the Michael Nyman Band on "The Michael Nyman Songbook" in 1991, and here the band is joined by Hilary Summers. "The Ballad of Kastriot Rexhepi" is a new work created with the artist Mary Kelly. This is performed by soprano Sarah Leonard with The Nyman Quartet: Gabrielle Lester, Catherine Thompson, Kate Musker, and Tony Hinnigan.
Document 10: Frank Bungarten: Frank Bungarten is a classical guitarist from Germany. Born in Cologne in 1958, Bungarten had his early influence of Guitar music when he was a teenager. In 1981, he got noticed in the international guitar scene, when virtuoso guitarist Andrés Segovia honored him with the first prize at the Guitar Competition of Granada, combined with an extensive concert tour of Spain. To date, he has performed in more than 40 countries. Among his recordings, “J.S.Bach ~ Sonatas and Partitas for Violin solo”, got serious recognition. Although he is often regarded as a Bach expert on the Concert Guitar, Bungarten claims to love and play a wide & diverse repertoire.
Document 11: Walser German: Walser German (German: "Walserdeutsch" ) and Walliser German ("Walliserdeutsch ", locally "Wallisertiitsch ") form a group of Highest Alemannic dialects spoken in parts of Switzerland (Valais, Ticino, Grisons), Italy (Piedmont, Aosta Valley), Liechtenstein, and Austria (Vorarlberg).
Document 12: Ludwig van (film): Ludwig van (full title: "Ludwig van: A report"; German: "Ludwig van: ein Bericht") is a black-and-white German film by Mauricio Kagel. Filmed in 1969, it was first screened the following year. The work was commissioned by Westdeutscher Rundfunk for the bicentennial celebrations of the birth of Ludwig van Beethoven in 1970. The film examines the reception of the composer and his works and how he has become a consumer product of the culture industry. The soundtrack is an arrangement of fragments of Beethoven's works, modified as if heard by the deaf composer himself; it is distinct from Kagel's 1970 composition "Ludwig van". Prominent contemporary artists including Dieter Roth, Stefan Wewerka (), Robert Filliou, and Joseph Beuys were involved in the design. According to "Gramophone", "at first it’s a laugh a minute ... then Kagel's film turns dark".
Document 13: Burr Van Nostrand: Burr Van Nostrand (born 1945) is an American classical composer and cellist. He is known for his avant-garde works which use aleatory and graphic notation and were composed from the 1960s through the 1980s. Van Nostrand was born in Los Angeles and began composing while still in high school in San Diego. He studied cello at Yale with Aldo Parisot and composition at the New England Conservatory under Robert Cogan. After his graduation from the NEC with a Masters in Music in 1971, he spent four years in the Netherlands at the Gaudeamus Foundation where several of his works were premiered. He stopped composing in the late 1980s but remained active as a cellist until 2000. There was renewed interest in his music following a concert of his early works at the New England Conservatory in 2012 and the release of a CD the following year containing his 1969 "Voyage in a White Building I" and two other works from that period.
Document 14: Mikroton Recordings: Mikroton Recordings is an independent record label for free improvisation, mostly its electroacoustic direction, founded by the artist and producer Kurt Liedwart and based in Moscow, Russia. Mikroton works with improvisers who used to be active in the field of electroacoustic improvisation like percussionist Günter Müller, laptop improviser , percussionist Jason Kahn, guitarist Keith Rowe, turntablists Dieb13 and eRikm, clarinettist Kai Fagaschinski, homemade electronics performer , guitarist Burkhard Stangl and others. It usually published electroacoustic, electronic and mixed works, trying to research a land between electronic and acoustic fields, pairing unorthodox instruments and materials. The label released two seminal compilation recordings for Austrian electroacoustic, experimental and improv group of artists known as klingt.org and Berlin Echtzeitmusik scene. Mikroton Recordings also hosts concerts in Moscow and St. Petersburg and runs Teni Zvuka festival.
Document 15: Igor Štuhec: Igor Štuhec (born 15 December 1932) is a contemporary Slovenian composer, who lives in Ljubljana and Maribor. He studied composition at the Ljubljana Academy of Music under Lucijan Marija Škerjanc and Matija Bravničar. He continued his studies at the Vienna Academy of Music and Dramatic Art under Hanns Jelinek, and also at the Darmstädter Ferienkurse. After some early neo-classical orchestral works that show his mastery of traditional techniques, Štuhec gradually moved towards the adoption of new techniques in the early 1960s. Although in 1955 he had produced a musique concrète composition in "Biological Transformation", the radical change came with the chamber pieces "Situacija" (1963) and "Silhuete" (1964) and the orchestral "Differentiations" (1964), all of which exhibit his assimilation of 12-note and aleatory procedures. Štuhec's skill is particularly evident in miniatures such as the "Minikoncert", where his writing is at its most delicate and the textures are almost always crystal clear. A later group of orchestral works extending his textural techniques, notably the concertos and the three "Entuziazmi" pieces, display a vivid imagination and a strong rhythmic momentum. Also among his works are two operas, "Zupanova Micka" (1948) and
ground_truth: Robert Walser