"At the same time, Sequoia stands as a homage to Ivan Wyschnegradsky. In 1956, Wyschnegradsky composed Arc-en-ciel for six pianos tuned a twelfth tone apart, with the aim of rendering in sound the innumerable gradations of color within ...
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Sample The Album:
Edu Haubensak-composer
Simone Keller-piano
Rafael Rutti-piano
Asia Ahmetjanova-piano
Stefan Kagi-piano
Yoko Sawa-piano
Stefan Wirth-piano
Click an artist name above to see in-stock items for that artist.
UPC: 752156106722
Label: ezz-thetics by Hat Hut Records Ltd
Catalog ID: ezz-thetics 1067
Squidco Product Code: 37307
Format: CD
Condition: New
Released: 2026
Country: Switzerland
Packaging: Cardboard Gatefold
Recorded at St. Jakob am Stauffacher, in Zurich, Switzerland, on September 22nd, 2024, by Marcel Babazadeh.
"At the same time, Sequoia stands as a homage to Ivan Wyschnegradsky. In 1956, Wyschnegradsky composed Arc-en-ciel for six pianos tuned a twelfth tone apart, with the aim of rendering in sound the innumerable gradations of color within a rainbow. Edu Haubensak, who at the end of the work quotes his 1979 piano piece Schwarz Weiss, thereby revealing the nucleus of Sequoia, thus brings several circles to a close. He not only connects his own past with the present, but also allows a monumental work to resound-one that is firmly rooted in the earth and reaches far into the heights, touching, with the tree tops, Wyschnegradsky's rainbow."-Rudolf Amstutz
Artist Biographies
• Show Bio for Edu Haubensak "Edu Haubensak was born in Helsinki 9. April 1954 and spent his childhood in Zurich. He then studied theory and composition with Thomas Kessler and Robert Suter at the Basle Academy of Music (1976-79). It was at this time that he wrote his first piano works ('Schwarz Weiss') and musico-scenic compositions ('Gleichgewichte', Drei Klangbilder). He also composed electronic collages for the radio, and several works of his were realized choreographically. In the Tonhalle, the Collegium Musicum Zurich gave the world premiere of his first orchestral work, under the baton of Brenton Langbein. Haubensak is a co-founder of the Fabrikkomposition concert series at Zurich's Rote Fabrik. In 1984/85, he was awarded a scholarship to the Istituto Svizzero in Rome, and in the same year was awarded First Prize by the jury of the International Composer's Seminar in Boswil. Haubensak has taken an intense interest in instruments with new tunings. His first pieces for piano solo with altered pitches culminated in the ten-part piano cycle 'Grosse Stimmung l - X' (1989-2005). In 1994, he was awarded a one-year work grant by the City of Zurich. He also attended composition courses and masterclasses with Heinz Holliger and Klaus Huber. In 2006 he won the Zollikon Arts Prize. He has been invited to international festivals (such as MaerzMusik Berlin, Klangspuren Tirol Austria, Festival Rümlingen, ZeitRäumeBasel) and has given lectures, taught, and engaged in research projects, sound installations and conceptual compositions. He has published various essays in DU, in WERK, POSITIONS and in the Neue Zürcher Zeitung. In 2010, he is a scholar of the cultural foundation Landis & Gyr in London. Edu Haubensak works with well-known musicians such as Samuel Stoll, Simone Keller, Martin Lorenz, Sylvia Nopper, Marianne Schuppe, Stefan Wirth, Conrad Steinmann, Tomas Bächli, Rico Gubler, Heinz Holliger and the ensembles Collegium Novum, Ensemble Tzara, Ensemble Werktag, Buck/Wolfarth, Cattral and Aequatuor, the orchestras Ensemble Resonanz Hamburg, the Basel Sinfonietta, Sinfonie Orchester Basel and also with the Musikkollegium Winterthur." ^ Hide Bio for Edu Haubensak • Show Bio for Simone Keller "The Swiss pianist Simone Keller (* 1980) completed her training in the concert class of Hans-Jürg Strub at the Zurich University of the Arts. In addition, she attended master classes with Andrzej Jasinski, Siegfried Mauser, Karl Engel and Hartmut Höll. She has received several prizes, awards and scholarships, such as first prize at the Landolt Competition for Piano, second prize at the Hans-Ninck-Competition for Piano, and the EMCY Chamber Music Award at the European Classic Festival Ruhr. Simone Keller performs as a soloist and chamber musician in a wide variety of formations and styles, with lively concert activity in Switzerland and many other countries. In recent years, she has appeared at the New Music Week in Shanghai, the Roulette and Symphony Space in New York, Constellation in Chicago, Opensound in Boston, CCRMA in San Francisco, Sonic Arts Exchange in Seoul, Hong Kong and Macau, at Fondation Suisse and Cité Internationale des Arts in Paris, Days for New Music in Bucharest, Kölner Philharmonie, Konzerthaus in Vienna, Weimarer Frühjahrstage, Mozarteum in Salzburg, Klangspuren in Schwaz, Megaron in Athens and the Imatronic Festival for Electronic Music at ZKM Karlsruhe, in Switzerland in Tonhalle Zurich, KKL Luzern, Dampfzentrale Bern, Studio Ernest Ansermet in Geneva, Gare du Nord Basel, Schlosskonzerte in Thun, Davos Festival and Klavierissimo Wetzikon. Since 2007, Simone Keller has been a member of the ENSEMBLE TZARA (www.ensembletzara.ch), which was awarded the Zurich Werkjahr in 2012. In addition, she plays in many other formations, such as Retro Disco, which in the past few years has starred in premieres by Robert Ashley and Alvin Lucier, the Trabant Echo Orchestra, a quintet with strings and drums playing minimal music such as "In C" by Terry Riley or Kukuruz Quartet (www.kukuruzquartett.ch) which features four pianists and sheds new light on the music of Julius Eastman. Kukuruz Piano Quartet has presented its programs in all over Europe with great success and to broad critical acclaim. Some of the places where the Quartet has performed include Documenta 14 in Athens (Megaron Concert Hall), Volksbühne Berlin and Schauspielhaus Zurich. Simone Keller regularly performs as a guest artist at the Musikkollegium Winterthur and the Südwestdeutschen Philharmonie and was invited by Ensemble Contrechamps from Geneva, the Austrian Ensemble for New Music, the Glassfarm Ensemble New York and the Hong Kong New Music Ensemble. From 2006 to 2014, she worked extensively as a guest musician of the Collegium Novum Zürich and with conductors such as Peter Rundel, Jonathan Stockhammer, Pablo Heras-Casado, Peter Ruzicka, Peter Hirsch, Heinz Holliger and Johannes Kalitzke. From 2008 to 2016 she was a permanent member of the Ensemble TaG for New Music in Winterthur, with whom she participated in numerous premieres of particularly rare works of composers. Simone Keller owes an important part of her artistic development to numerous composers, including Robert Ashley, Wanja Aloe, Darija Andovska, Saskia Bladt, Edu Haubensak, Frederick Rzewski, Katharina Rosenberger, Timothy McCormack, Juhee Chung and Alvin Lucier, Isabel Mundry, Marko Nikodijevic, Diana Rotaru, David Sontòn Caflisch, Bruno Karrer, Pierre Favre, Oliver Weber, Marcel Zaes and Alfred Zimmerlin. In addition, her continuous work as a theater musician plays an important role. Simone Keller worked as a pianist and actress in countless productions at the Schauspielhaus Zürich, Theater Basel, City Theater Bern, Theater Neumarkt in Zurich, Theater Chur, Schlachthaus Theater Bern, Theater Rigiblick Zürich, Theater Winterthur and the Theater at Gleis Winterthur with directors such as Ursina Greuel, Ruedi Häusermann, Joachim Schloemer and Fritz Hauser. 2014 Simone Keller and Philip Bartels founded ox&öl (www.oxoel.ch) a music and theatre company which also develops the latest forms of education projects for children and adults, such as the Intergenerationen-Musikwerkstatt "Piccolo Concerto Grosso" which was developed in collaboration with the Lucerne Symphony Orchestra. ox&öl received several charity awards for their campaigns. Simone Keller has recorded for the Böhlau Verlag in Vienna Galina Ustwolskajas piano sonatas, has performed various solo and chamber music recordings in collaboration with the SWR Experimentalstudio, the Swiss Radio DRS and SRF, Musiques Suisses, Intakt Records and Quilin Records. Currently Simone Keller lives in Belgrade." ^ Hide Bio for Simone Keller
5/26/2026
Have a better biography or biography source? Please Contact Us so that we can update this biography.
5/26/2026
Have a better biography or biography source? Please Contact Us so that we can update this biography.
Track Listing:
1. Sequoia I 11:36
2. Sequoia II 16:27
3. Sequoia III 15:03
4. Sequoia IV 13:38
In Stock, Not Yet Cataloged
May 2026
Compositional Forms
European Improvisation, Composition and Experimental Forms
Piano & Keyboards
Sextet Recordings
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