
PhilSQ

The Philharmonic String Quartet represents the young generation of musicians of the Berlin Philharmonic: cosmopolitan, versatile and artistically passionate. In the winter of 2018, three young Philharmonic members — Helena Madoka Berg (violin), Dorian Xhoxhi (violin) and Kyoungmin Park (viola) — founded a new ensemble out of a desire to make music together with enthusiasm. Together with Christoph Heesch (cello), who brings his experience as a soloist to this intimate setting of making music, they strive to inspire their listeners with fresh impulses and outstanding sound quality.
Christoph Heesch

Christoph Heesch is one of the most promising artists of today’s music scene and impresses with his soloistic and chamber music skills — meanwhile he is celebrating great success both nationally and internationally. The main focus of his artistic work is the examination of music from a stylistically critical perspective, taking into account the technical skills of instrumental playing combined with an exciting interaction with the audience.
Born in Berlin in 1995, the artist began playing the cello at the age of six. In the following years he studied at the Julius Stern Institute, worked for several years with Jens Peter Maintz and attended master classes with David Geringas, Wolfgang Boettcher and Lászlo Fenyö. Today Christoph Heesch studies at the University of the Arts Berlin with Wolfgang Emanuel Schmidt. As solo cellist of the Ensemble Esperanza and the Chamber Orchestra Eroica Berlin he combines knowledge of historically informed performance practice with modern instruments.
The artist pays particular attention to classical concerts, which he would like to open up to a broad audience. The innovative concerts and other music mediation formats of the TONALi project offer an ideal home for his musical and conceptual ideas.
Christoph Heesch is a laureate of national and international competitions: He was awarded at the “Antonio Janigro” competition in Croatia and the international “Witold-Lutosławski” competition as well as at the XIIth Domenico Gabrielli Competition. Christoph Heesch has also been awarded the “Mieczysław Weinberg” prize and a special prize for the best music mediation at the TONALi15 music competition. At the German Music Competition 2016 in Bonn he received a scholarship after reaching the semifinal and he was semifinalist of the Queen Elisabeth Competition 2017.
He holds a scholarship at the Musikakademie Liechtenstein and has been playing a cello by Domenicus Montagnana from the German Musical Instrument Fund „Deutsche Stiftung Musikleben“ since 2017.
Dorian Xhoxhi

Violinist Dorian Xhoxhi joined the Berliner Philharmoniker as a member of the first violin section in 2010. Before that, he was a member of the Deutsches Symphonie Orchester Berlin and later became Principal Concertmaster of the Second Violins in the Gewandhausorchester Leipzig.
At the age of six, Dorian received his first violin lessons from his father, university professor Roland Xhoxhi, in Tirana. He later studied in Munich and Berlin with Prof. E. Sebestyen, Prof. S. Picard and Prof. A. Weithaas. Through achieving a fellowship at the Villa Musica Mainz and attending master classes from Midori, R. Fein, Z. Bron and E. Feltz, Dorian received further crucial impulses. In 2006 he was awarded first prize at both the International Queen Sophie Charlotte Competition in Mirow und the International Louise Henriette Competition in Oranienburg.
As a member of the Berliner Barock Solisten, Dorian frequently works with artist personalities such as Reinhard Goebel, Emmanuelle Haim and Vittorio Ghielmi. In this context, the performance with period instruments has developed into an integral part of Dorian’s artistic work throughout several years.
A demanded soloist, chamber musician and teacher, Dorian is regularly active in Europe and Asia. In 2018, he became an associate professor for violin at the Rostock University of Music and Drama.
In the same year, his enthusiasm for chamber music led Dorian to establish the Philharmonic String Quartet with his Philharmonic colleagues Helena Madoka Berg and Kyoungmin Park. Dorian plays a violin from Camillo Camilli, Mantova 1739.
BIOGRAPHY
The Philharmonic String Quartet represents chamber musical excellence of the Berlin Philharmonic: cosmopolitan, versatile and artistically passionate.
Out of a desire to make music together with enthusiasm, the Philharmonic String Quartet was founded in 2018, and features three members of the Berlin Philharmonic – Dorian Xhoxhi (violin), Helena Berg (violin) and Naoko Shimizu (viola) — and the esteemed soloist Christoph Heesch (cello). The balance between powerful freshness and rich, philharmonic sound particularly distinguishes this ensemble. “The Philharmonic String Quartet captivates the audience from the first note.” (Rondo Magazine 5/14/2022)
The musicians are aware that they are following in great footsteps: with the Philharmonic String Quartet they are continuing the venerable tradition of the Berlin Philharmonic’s ensembles of making chamber music at the highest level. All four musicians have won various top-class competitions and have vast experience in various chamber music formations. The Philharmonic String Quartet offers them the opportunity to create their own musical expression. They feel less committed to a certain style than to their virtuosity, and they follow the motto of Wolfgang Amadeus Mozart: “…because we love to talk to all kinds of masters – with the old and modern.”
Helena Berg

The violin plays an important role in her family: her parents are violinists, and after her big sister started getting lessons from them, Helena Madoka Berg did not want to be left behind. The desire to become a professional musician however came later. Born and raised in Berlin, she studied at the Julius Stern Institute of the Berlin University of the Arts (UdK) with Tomasz Tomaszewski (1997-2004), at the Juilliard School New York with Robert Mann, and at the Hanns Eisler University of Music with Antje Weithaas. She also attended master classes with Kurt Saßmannshaus, Thomas Brandis, Rainer Kussmaul and Christian Tetzlaff among others. Her training was supported by several grants, including the Deutsche Stiftung Musikleben and the Villa Musica Rheinland-Pfalz.
The winner of various competitions, such as the Jakob Stainer Violin Competition and the Ibolyka Gyarfas Violin Competition, she gained her first orchestral experience in the Jeunesses Musicales World Orchestra, the Berlin State Youth Orchestra, and the Gustav Mahler Youth Orchestra. From 2009-2010 she apprenticed in the Berlin Philharmonic Orchestra Academy studying under Guy
Braunstein and Christian Stadelmann. Her first orchestral position led her to the Munich Philharmonic, and since 2012 she has been a member of the Bayreuth Festival Orchestra. In September 2013 Helena Madoka Berg returned to the Berlin Philharmonic as a member of the second violins, and in February 2016 joined the first violins. Aside from her love for making music, she keeps busy with her two small children.
Naoko Shimizu
In 1997, Ms. Shimizu won 1st Prize at the ARD International Music Competition in Munich, becoming the first violist in 21 years to win this prize. She has been a welcome guest at international concert venues ever since. Prior to that, she won the International Competition in Geneva in 1996 as well as winning 1st Prize at the International Instrumental Competition in Markneukirchen, Germany in 1995. In 1998, she won the Young Concert Artist International Auditions in the United States.
Ms. Shimizu has performed as a soloist with such orchestras as the Symphonieorchester des Bayerischen Rundfunks, the SWR Radio-Sinfonieorchester Stuttgart, the Orchestre de la Suisse Romande, the Budapest Strings at the Rheingau Musik Festival, as well as with many Japanese orchestras. She has also appeared in recital on solo concert tours of the US, Italy and Japan. She was a guest chamber music artist with the Malboro Music Festival in the US from 1995 to 1998. She also took part in the “Musicians from Marlboro Tour“.
Born in Osaka, Japan, Naoko Shimizu studied viola under Nobuo Okada at the Toho Gakuen School of Music, Japan. In 1994, she began studies with Nobuko Imai at the Hochschule für Musik in Detmold, Germany, completing her degree in viola performance there. She has been the principal violist of the Berliner Philharmoniker since 2001, as well as being in high demand as a soloist and chamber musician.
BIOGRAPHY
The Philharmonic String Quartet represents chamber musical excellence of the Berlin Philharmonic: cosmopolitan, versatile and artistically passionate.
Out of a desire to make music together with enthusiasm, the Philharmonic String Quartet was founded in 2018, and features three members of the Berlin Philharmonic – Dorian Xhoxhi (violin), Helena Berg (violin) and Naoko Shimizu (viola) — and the esteemed soloist Christoph Heesch (cello). The balance between powerful freshness and rich, philharmonic sound particularly distinguishes this ensemble. “The Philharmonic String Quartet captivates the audience from the first note.” (Rondo Magazine 5/14/2022)
The musicians are aware that they are following in great footsteps: with the Philharmonic String Quartet they are continuing the venerable tradition of the Berlin Philharmonic’s ensembles of making chamber music at the highest level. All four musicians have won various top-class competitions and have vast experience in various chamber music formations. The Philharmonic String Quartet offers them the opportunity to create their own musical expression. They feel less committed to a certain style than to their virtuosity, and they follow the motto of Wolfgang Amadeus Mozart: “…because we love to talk to all kinds of masters – with the old and modern.”
Concert 15.02.2026 Desenzano del Garda (IT)
Philharmonisches Streichquartett2026-01-14T00:18:06+01:00January 4th, 2026|
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Performers:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin von der Nahmer – viola
- Christoph Heesch – cello
Further information at:

New Year’s Concert In Duingen (GER)
Philharmonisches Streichquartett2026-01-14T00:11:14+01:00January 3rd, 2026|
Concert on January 11, 2026, at St. Catherine’s Church (Katharinenkirche), Duingen
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Philharmonic String Quartet:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin Stegner – viola
- Christoph Heesch – cello
China Tour 18.-25.10.2025
Philharmonisches Streichquartett2026-01-14T00:08:17+01:00January 1st, 2026|
Philharmonic String Quartet on a Major China Tour:
After great successes on the stages of China’s most renowned concert halls—Tianjin, Shanghai, Beijing, Wuhan, and Shenzhen—our journey has come to an end. A spellbound atmosphere, an exceptionally attentive audience, sold-out halls, and wonderful hospitality accompanied us throughout.
We would like to thank everyone who was part of this truly memorable experience.
Our special thanks go to our partner Wu Promotion, who made this concert tour possible in the first place.
https://wupromotion.com/en/news/1407-berlin-philharmonic-string-quartet-2025-china-tour-concludes-with-resounding-success








12.10.2025 19:30 Bürgerhaus Telgte, DE
Philharmonisches Streichquartett2025-10-02T14:47:51+02:00October 2nd, 2025|
guest concert in Telgte – on behalf of the audience‘s favour – philharmonic string quartet is coming back again for another concert with works by W.A. Mozart, A. Dvorák and L.v. Beethoven.
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Tobias Reifland Viola /
Christoph Heesch Violoncello /
more information: https://www.kulturfreunde-telgte.de/2025/10/12/philharmonisches-streichquartett-berlin/



05.10.2025 17:00 Schloss Salder – Salzgitter, DE
Philharmonisches Streichquartett2025-10-02T14:57:42+02:00October 2nd, 2025|
guest concert in Telgte – on behalf of the audience‘s favour – philharmonic string quartet is coming back again for another concert with works by W.A. Mozart, A. Dvorák and L.v. Beethoven.
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Tobias Reifland Viola /
Christoph Heesch Violoncello /
more information: https://www.kulturfreunde-telgte.de/2025/10/12/philharmonisches-streichquartett-berlin/



01.-03.10.25 Quartet Concerts in Ithra Theatre (Saudi-Arabia)
Philharmonisches Streichquartett2025-10-02T15:34:35+02:00October 1st, 2025|
3 guest concerts and workshops for students (Saudi Arabia premiere) at Ithra Theatre in Dhahran
works by W.A. Mozart, A. Dvorák and L.v.Beethoven
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Martin von der Nahmer Viola /
Christoph Heesch Violoncello /
more information:


10.09.2025 20:00 piano quintets with Alexander Krichel
Philharmonisches Streichquartett2025-10-02T15:33:33+02:00September 10th, 2025|
Piano Quintets
The Philharmonic String Quartet and Alexander Krichel at the highly reputable festival Kempen-Klassik
Programme:
César Franck (1822–1890) Piano Quintet in F minor
Antonín Dvořák (1841–1904) Piano Quintet No. 2 in A major, Op. 81, B. 155
Philharmonic String Quartet and Alexander Krichel (Piano)


19.02.25 20:00 Quartet Concert in Chios (Greece)
Philharmonisches Streichquartett2025-02-17T00:31:49+01:00February 17th, 2025|
guest concert in Athens – in collaboration with Chios music Festival and Goethe Institute Germany –
works by W.A. Mozart, A. Dvorák und F. Schubert
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Martin von der Nahmer Viola /
Christoph Heesch Violoncello /
more information:


19.02.25 20:00 Quartet Concert in Chios (Greece)
Philharmonisches Streichquartett2025-02-04T12:59:52+01:00February 4th, 2025|
guest concert in Chios – Homerion Cultural Centre of the Municipality of Chios –
works by W.A. Mozart, A. Dvorák und F. Schubert
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Martin von der Nahmer Viola /
Christoph Heesch Violoncello /
more information:


17.02.25 21:00 Quartet Concert in Rho (Italy)
Philharmonisches Streichquartett2025-02-04T12:51:28+01:00February 4th, 2025|
PHILHARMONIC STRING QUARTET BERLIN in concert at the Teatro Civico Rho
works by W.A. Mozart, A. Dvorák und F. Schubert
Dorian Xhoxhi Violin /
Helena Madoka Berg Violin /
Martin von der Nahmer Viola /
Christoph Heesch Violoncello /
more information:
https://www.teatrocivicorho.com/la-stagione-2024-25/scheda170225


19.03.2022 concert in Dannenberg with Haiou Zhang (piano)
Philharmonisches Streichquartett2024-10-27T10:43:15+01:00March 19th, 2022|
concert in Dannenberg (Elbe) with Haiou Zhang (piano):
Felix Mendelssohn: string quartet in f minor op.80 No. 6
Antonín Dvořák: piano quintet in A major
Review of the new album in the German newspaper “Tagesspiegel”
bianca-cantelli2022-03-21T15:15:14+01:00March 13th, 2022|
„Empfindsamkeit, Wehmut, Übermut: Böhmen liegt an der Spree, dank der jungen Philharmoniker Helena Madoka Berg, Dorian Xhoxhi und Kyoungmin Park, die mit Christoph Heesch einen heiteren Dovrák und die kühnen Träume von Josef Suk beseelen.“ (Translation: “Sensibility, wistfulness, exuberance: Bohemia resides on the Spree, thanks to the young Philharmonics Helena Madoka Berg, Dorian Xhoxhi and Kyoungmin Park, who animate a serene Dovrák with Christoph Heesch and the bold dreams of Josef Suk.”) – Tagesspiegel, 13.03.2022
Review of the new album in the German magazine “Pizzicato”
bianca-cantelli2022-03-11T23:11:01+01:00March 11th, 2022|
Link to English review: https://www.pizzicato.lu/suk-und-dvorak-mit-viel-energie-und-intensitat/
15.05.22 Concert in the Chamber Music Hall of the Berlin Philharmonic Hall
bianca-cantelli2022-03-21T16:28:26+01:00March 11th, 2022|
Works by Dvořák, Schulhoff and Hartmann.
For more information: https://www.berliner-philharmoniker.de/konzerte/kalender/details/53824/
First trailer and single out now!
bianca-cantelli2022-03-11T23:36:34+01:00March 4th, 2022|
Here is our first short trailer, and with today the first single of our brand new CD is also available through all streaming platforms! Have a listen!
Album Release on March 11, 2022
bianca-cantelli2022-03-08T22:09:40+01:00March 1st, 2022|
The Philharmonic String Quartet Berlin presents two works by Bohemian composers which have a special relationship to each other: Josef Suk’s Second String Quartet Op. 31 and Antonín Dvořák’s 13th String Quartet Op. 106. Indeed, it was Suk himself who, as a violinist, premiered Dvořák’s String Quartet with his own quartet in 1896.


Education concert Berlin Philharmonie
Philharmonisches Streichquartett2024-10-27T10:34:36+01:00February 12th, 2022|
Programme:
Joseph Haydn (1732-1809) : “Kaiserquartett” op. 76 Nr.3
Wolfgang A. Mozart (1756-1791) : Divertimento in F major KV 138
Johann Strauß: Éljen a Magyar
bianca-cantelli2024-09-13T10:34:33+02:00November 3rd, 2020|
A short glimpse of this year’s concert tour in Italy, we would like to thank Asolo Musica, Mittelfest Festival (Cividale), Ilaria Scaffardi Artist Management und of course our audiences who we could play for in these difficult times.
Welcome to our new Website!
Christoph Heesch2020-06-08T12:40:46+02:00June 5th, 2020|
January 2026
Concert 15.02.2026 Desenzano del Garda (IT)
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Performers:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin von der Nahmer – viola
- Christoph Heesch – cello
Further information at:




New Year’s Concert In Duingen (GER)
Concert on January 11, 2026, at St. Catherine’s Church (Katharinenkirche), Duingen
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Philharmonic String Quartet:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin Stegner – viola
- Christoph Heesch – cello
China Tour 18.-25.10.2025
Philharmonic String Quartet on a Major China Tour:
After great successes on the stages of China’s most renowned concert halls—Tianjin, Shanghai, Beijing, Wuhan, and Shenzhen—our journey has come to an end. A spellbound atmosphere, an exceptionally attentive audience, sold-out halls, and wonderful hospitality accompanied us throughout.
We would like to thank everyone who was part of this truly memorable experience.
Our special thanks go to our partner Wu Promotion, who made this concert tour possible in the first place.
https://wupromotion.com/en/news/1407-berlin-philharmonic-string-quartet-2025-china-tour-concludes-with-resounding-success








January 2026
Concert 15.02.2026 Desenzano del Garda (IT)
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Performers:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin von der Nahmer – viola
- Christoph Heesch – cello
Further information at:




New Year’s Concert In Duingen (GER)
Concert on January 11, 2026, at St. Catherine’s Church (Katharinenkirche), Duingen
Program:
- W. A. Mozart – Divertimento in D major, K. 136
- A. Dvořák – String Quartet No. 12 in F major, Op. 96, “American Quartet”
——— Intermission ———
- F. Schubert – String Quartet No. 14 in D minor, “Death and the Maiden”
Philharmonic String Quartet:
- Helena Madoka Berg – violin
- Dorian Xhoxhi – violin
- Martin Stegner – viola
- Christoph Heesch – cello
China Tour 18.-25.10.2025
Philharmonic String Quartet on a Major China Tour:
After great successes on the stages of China’s most renowned concert halls—Tianjin, Shanghai, Beijing, Wuhan, and Shenzhen—our journey has come to an end. A spellbound atmosphere, an exceptionally attentive audience, sold-out halls, and wonderful hospitality accompanied us throughout.
We would like to thank everyone who was part of this truly memorable experience.
Our special thanks go to our partner Wu Promotion, who made this concert tour possible in the first place.
https://wupromotion.com/en/news/1407-berlin-philharmonic-string-quartet-2025-china-tour-concludes-with-resounding-success








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