Opening Wiener Festwochen

We are very excited to play at the opening of the Wiener Festwochen at the Rathausplatz in Vienna! Under the direction of Hyung-ki Joo, the show will be filled with artists from all over the world combining acrobatics, break dance, poetry, flamenco, beat boxing, whistling and more! The event [...]

May 7th, 2023|

Win in Bad Tölz

We are overjoyed to report that we have won the 1st Prize (€10.000) and the Henle Urtext Prize (€2.500) at the 1st Bad Tölz International String Quartet Competition! It is very special for us to be awarded the top prize by such a diverse and inspiring jury with Günter [...]

April 19th, 2023|

🎷🎷FREE THE FRANZ! Schubert, Saxophon und das @chaosstringquartet im F23, am 30.03. um 20 Uhr, Link zu kostenlosen Zählkarten in bio. Eine Stunde Musik in gemütlicher Atmosphäre. Kommt und bleibt auf ein Gläschen danach! 🍻🍻 ...

🎷FREE THE FRANZ | Donnerstag, 30.03.2023 20 Uhr, @f23.wir.fabriken Wien Liesing! Link zu kostenlosen Zählkarten in bio!🎷 ...

🇦🇹🥄Donnerstag, 23.03., 20 Uhr, Musikverein!🥄🇦🇹 ...

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1 month ago
Chaos String Quartet

Merci à tous! C’était une experience fantastique et inoubliable! Nous espérons à pouvoir retenir bientôt! 🍷🎶🎻 ... See MoreSee Less

Merci à tous! C’était une experience fantastique et inoubliable! Nous espérons à pouvoir retenir bientôt! 🍷🎶🎻Image attachmentImage attachment+3Image attachment

🇫🇷🍷 Ce soir dans un endroit incroyable 🍷🇫🇷[Jour 3] Nous avons eu la chance de pouvoir poser quelques questions au Chaos String Quartet avant leur venue au Festival Beethoven à Beaune ce soir, pour la troisième soirée.

✨ Comment avez-vous imaginé le programme du concert de ce soir ?

Le programme est une ode à la joie de vivre. Nous avons choisi l'Op. 18/2 et l'Op. 130 de Beethoven, avec la "Große Fuge" comme dernier mouvement. La "Große Fuge" est l'une des premières œuvres que nous avons apprises en tant que quatuor. Elle comprend de nombreux aspects du chaos, le nom de notre quatuor. Pour nous, il était donc logique d'apprendre l'ensemble de l'Op. 130. Nous avons choisi un Beethoven précoce pour contrebalancer la grandeur de l'Op. 130 et de la "Große Fuge". L'Op. 18/2 est une œuvre merveilleuse remplie de joie juvénile.

✨ Un mot pour décrire le Festival ?

Nous ne sommes pas encore venus à Beaune, mais nous avons entendu dire que l'atmosphère et la nourriture y sont excellentes !

✨ Quel est votre lien personnel avec Beethoven ?

Pour un quatuor, Beethoven est essentiel. Il a composé les plus grandes œuvres de notre genre musical. Il est implacable, sensible, grand mais aussi intime. Sa musique est la vie et va au-delà du temps.

Merci au Chaos String Quartet !

👉 Il reste encore quelques places pour le concert !

#concert #festival #Beethoven #beaune
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🇫🇷🍷 Ce soir dans un endroit incroyable 🍷🇫🇷
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“One must still have chaos in oneself to be able to give birth to a dancing star.”
Friedrich Nietzsche

Founded in 2019 on the interdisciplinary concept of chaos, the Chaos String Quartet combines a highly refined ensemble culture and a fiery vitality with a passion for exploring experimental and improvisational approaches. With their affinity for embracing unpredictability and risk-taking, the ensemble’s members bring a unique dynamism and vibrancy to their playing featuring a whole universe of sounds.

As laureates of the most prestigious international competitions such as Bad Tölz (2023), ARD (2022), Bordeaux (2022), and Haydn (2023), the Chaos String Quartet is rapidly establishing itself on the international music scene. Earlier successes include winning the 2nd Prize at Budapest’s 2021 Bartók World Competition and the Premio V. E. Rimbotti in Italy.

The Chaos String Quartet was invited to music festivals such as the Schwetzing SWR Festival, Mozartfest Würzburg, Les Musicales de Normandie, the Davos Festival, the Ravenna Festival, the Gent Festival van Vlaanderen, Musica Insieme Bologna, Festival Academy Budapest, Festival del Quartetto Firenze, Lockenhaus, Wien Modern and the Heidelberger Streichquartettfest.

Mentored by Prof. Johannes Meissl in Vienna through the ECMAster program, the quartet has additionally completed a postgraduate course at the Scuola di Musica di Fiesole with the Cuarteto Casals. The ensemble received additional musical impulses from artists such as Eberhard Feltz, Patrick Jüdt, Rainer Schmidt (Hagen Quartet), Hatto Beyerle (Alban Berg Quartet),  András Keller (Keller Quartet) and Oliver Wille (Kuss Quartet).

Furthermore, the quartet is a member of the Chamber Music Association Le Dimore del Quartetto and has been selected for the promotional program New Austrian Sound of Music.

The Chaos String Quartet is developing multi-art performances and for the season 2022/2023, can be heard on concert stages in Austria, France, Germany, Israel, Hungary, and the UK.



Born into a musical household, Hungarian-German violinist Susanne Schäffer studied with Dr. Felix Andrievsky in London and Prof. Dora Schwarzberg at the MDW in Vienna, where she graduated with distinction. She is currently completing her studies in chamber music with Prof. Johannes Meissl at her alma mater in Vienna.
Her additional musical mentors include such artists as Hatto Beyerle, Gerhard Schulz, Ferenc Rados and Steven Isserlis.
A prizewinner at renowned national and international music competitions, Schäffer regularly performs as a soloist and chamber musician, including on concert tours throughout Europe, Israel, Venezuela, the USA and Japan.
Moreover, Susanne is a welcomed guest at prestigious festivals such as the Cully Classique Festival, the ISA Festival, and IMS Prussia Cove. She regularly appears on television, and on broadcast and has recorded several CDs.


Eszter Kruchió started playing the violin at the age of five. Born in 1993 in Budapest and brought up in Vienna, she studied with Ernst Kovacic (Vienna), Tanja Becker-Bender (Hamburg) and Ulf Schneider (Hanover), currently in the postgraduate Solo Performance Class. She received further important musical impulses from Oliver Wille, Eberhard Feltz, Ralf Gothóni, Rita Wagner, Ferenc Rados and Péter Eötvös, among others.
As a winner of several national and international prizes, Eszter has had the chance to perform as a chamber music partner of Thomas Riebl, Tanja Becker-Bender, Péter Nagy, István Várdai and Claudio Martínez-Mehner, as well as with the Castalian, Berlin-Tokyo and Van Kuijk String Quartets. She is a frequent participant in festivals and masterclasses such as Encuentro de Santander, the Davos Festival – Young Artists in Concert, Sommerliche Musiktage Hitzacker and IMS Prussia Cove.
Eszter plays on a violin by Stefan-Peter Greiner, a generous private loan.


A devoted chamber- and orchestral musician, Italian violist Sara Marzadori studied with Antonello Farulli in Bologna and Thomas Riebl in Salzburg before earning her master’s degree in 2017 from the Mozarteum Salzburg in the classes of William Coleman and Veronika Hagen.
Furthermore, she studied quartet chamber music with Walter Levin and Oliver Wille in Basel and Hannover, respectively, and received further musical training from Bruno Giuranna, Kim Kashkashian, among others.
Marzadori became a regular member of Orchestra Mozart under the direction of Claudio Abbado after having been admitted to the Orchestra Academy at age 15 and was a member of the EUYO, the Gustav Mahler Academy as well as the Luzern Academy.
Sara won prizes at several instrumental and chamber music competitions and plays regularly with the Camerata Salzburg, Orchestra Leonore, Spira Mirabilis and the Haydn Philharmonic.


Born in the Netherlands, Bas Jongen studied cello in Amsterdam and Zagreb before completing his undergraduate studies with Reinhard Latzko at the MDW in Vienna. In 2017, he obtained his master’s from the Royal College of Music in Stockholm in the class of Torleif Thedéen. Having a keen interest in science, Bas also studies Natural Sciences (Physics) at the Open University.
He received further musical impulses from respected artists such as Heinrich Schiff, Frans Helmerson, Anner Bijlsma, Natalia Gutman as well as Johannes Meissl, Miguel da Silva, Andras Keller and Petr Prause.
A laureate of national and international music competitions, Jongen gave recitals and appeared as a soloist all over Europe, as well as the US, Brazil, Japan, Korea and Australia.
Bas Jongen plays a rare cello by Hendrick Jacobs (Amsterdam, ±1690), kindly loaned to him from the collection of the Dutch National Musical Instruments Foundation.



04jun21:00Venaria Reale, ItalyLate Spring Music Festival IV21:00 La Reggia di Venaria | Sala Diana

11jun11:00Würzburg, GermanyMozartfest Würzburg11:00 Residenz, Fürstensaal

16jun20:00Reims, FranceLes Flaneries Musicales de Reims20:00 Maison de Champagne Roederer

17jun20:00Rome, ItalyFestival Estivo Accademia Filarmonica Romana20:00 Accademia Filarmonica Romana | Sala Casella

18jun17:00Vienna, AustriaKunst rund um Schubert17:00 Am Sobieskiplatz

24jun19:00Annweiler, GermanyBurg Trifels | Villa Musica19:00 Burg Trifels

29jun19:30Vienna, AustriaFree the Franz 219:30 Collegium Hungaricum


06jul20:00Kfar Blum, IsraelVoice of Music Festival in the Upper Gallilee I20:00 Beth Ha'am

07jul14:00Kfar Blum, IsraelVoice of Music Festival in the Upper Gallilee II14:00 Clore Auditorium

08jul12:00Kfar Blum, IsraelVoice of Music Festival in the Upper Gallilee III12:00 Beth Ha'am


REPERTOIRE 2022-2023

J. S. BACH/Arr. Mozart
The Well-Tempered Clavier (Selection)
String Quartet No. 4
String Quartet in G Major, Op. 18/2
String Quartet in D Major, Op. 18/3
String Quartet in B-Flat Major, Op. 130
String Quartet in C-Sharp Minor, Op. 131
Grosse Fuge, Op. 133
Correspondence: Scenes for String Quartet (1992/3)
String Quartet in F Minor, Op. 20/5
String Quartet in B Minor, Op. 64/2
String Quartet in F Major, Op. 77/2
Officium breve, Op. 28
String Quartet No. 1 “Metamorphoses nocturnes”
String Quartet in E-Flat Major, H.277
String Quartet in G Major, KV. 80
String Quartet in F Major, KV. 158
String Quartet in F Major, KV. 168
String Quartet in D Major, KV. 499 “Hoffmeister”
“Terra memoria” (2006)
String Quartet in D Minor, “Death and the Maiden”, D.810
“Entr’acte” (2011)
String Quartet in A Major, Op. 41/3
5 Movements, Op. 5


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