Carmen Molina Espejo


Bergische Symphoniker

Susanne Jablonski


Staatsorchester Kassel

Celso Francisco LÓPEZ QUIROZ


Solocellist of the National Symphony Orchestra, Chile

Stephan Buchmiller

German Opera Berlin

Maria Rallo Muguruza

Maria Rallo Muguruza

Hamburg Philharmonic State Orchestra

Rainer Michael Cocron

Rainer Michael Cocron

Head of Sales and specialist for string instruments (at Ingles & Hayday)
Violinist with Oxford Philharmonic Orchestra and National Symphony Orchestra, London.

Hekun Wu

Hekun Wu

concertist & professor
Portland – Shanghai

I am currently playing on the Ragnar Hayn violoncello (2023), a replica of the “Duport” Stradivarius 1711, ex-Rostropovich.

After just two months since its completion, the new cello recently made its concert début on the Debussy Sonate and Shostakovich Trio no. 2. With such drastic differences in musical style, the cello exhibits its wide range of dynamics and array of timbres, which enable the player to realize his ideals.

The Ragnar Hayn cello possesses the finest draftsmanship in the Stradivarius tradition, from the selection of wood to the varnish. It is rare to find such an instrument that fuses the beauty in its appeal and sound — it is a joy to play.

Simone von Rahden

Simone von Rahden


Fabian Lindner

Hamburger Symphoniker

Sophie Kauer

Sophie Kauer


Elisabeth Wand



Bennet Morrice Ortmann

Solo-violist of the Philharmonic Orchestra Lübeck

Joanna Sachryn


Susanne Raßbach


MDR-Sinfonieorchester Leipzig

Ricardo Bru

Ricardo Bru


Volksoper Wien

Matan Gilitchensky

Viola, deputy principal violist of the Dresden Philharmonic Orchestra

Katarzyna Polonek

Prof. Katarzyna Polonek

Professor of Cello at the Academy of Music Poznań

Pauline Sachse

Pauline Sachse

viola, solo violist and professor at the Musikhochschule Lübeck

Christian Liberty Marshall



Eckhard Kleindopf


Neue Philharmonie Westfalen

Marc Kopitzki


Solo violist of the Ensemble Reflektor

Rothko String Quartet

Jee Hee Kim


Symphoniker Hamburg

Alejandro Biancotti


Solo cellist, Haydn Orchester Bozen

Adrien Jurkovic


Wen Hung


1st violin , prelude player, Staatskapelle Darmstadt

Miguel Colom


Concertmaster of the Spanish National Orchestra in Madrid

Núria Pujolràs



Dorothea Plans Casal

Dorothea Plans Casal

Cellist of the Dresden Philharmonic Orchestra

Raphael Flieder

cellist of the Vienna Philharmonics

Chou Tzu-Jen

2nd concert master, Philharmonic Orchestra Lübeck

Emily Yabe


Truls Mørk

solo cellist, professor at Norwegian Academy of Music in Oslo,

Antonio Vinualez Perez

violin, Basel

Iris Meongwon Cho photo

Iris Meongwon Cho

cello, Tonkünstler Orchester, Vienna

Fanny Pujol

violin, HR Symphonieorchester

Federico Maria Fabbris

viola, Rai Orchestra, Turin

Emmanuel Hahn

2nd violin, tutti, Münchner Rundfunk Orchester

Youngkun Kwak

1st Leader of the Orchestra Philharmonie Neubrandenburg, Aushilfe Berliner Philharmoniker

Erik Asgeirsson

Erik Asgeirsson

Solo cellist at Philharmonie Südwestfalen

Leonhard Straumer

Cellist, WDR Sinfonieorchester, Cologne

Stiftung Pirolo In Basel

1 Violine

Suying Aw

violist, Auckland, Australia

Konstanze von Gutzeit

solo cellist of the Broadcast Symphony Orchestra Berlin

Xian Liu

violinist, 2nd assistant principal, China National Centre for Performing Arts Orchetra

Guillaume Terrail

deputy solo cellist, Opera Barcelona

Sverre Barrat-Due

deputy solo cellist of the Norwegian Radio Orchestra

Johannes Dworatzek


Gabriel Adorján

concertmaster of Orchester der Komischen Oper Berlin

Abel Gonzalez Rodriguez

violist, Real Orquesta Sinfonica de Sevilla

Samuel Lutzker

cellist, Symphony Orchestra of the Bayrischen Rundfunk

Csaba Bornemisza

cellist Vienna Philharmonic Orchestra

Ning Feng

solo violinist

Daniel Wenzel

Solocellist, Aachen

Sebastian Bru

cellist of Vienna Philharmonic Orchestra

Kim Esther Roloff

solo violist, Deutsches Kammerorchester Berlin

Stefanie Farrands

Principal Viola of the Australien Chamber Orchestra

Stefan Gartmayer

cellist of the Vienna Philharmonic Orchestra

Sander Stuart

solo violist, scholarship recipient of Deutsche Stiftung Musikleben

Ruodi Li

principal cello (2nd) of the State Theater Orchestra Wiesbaden

Peter Somodari

solo cellist at Vienna Philharmonic Orchestra

Matthias Purrer

cellist, Aachen

Bernhard Hartog

leader of DSO Berlin, honorary professor at UdK Berlin

Christine Rauh

solo cellist,

Luke Turrell

solo-violist, Gewandhausorchester Leipzig,

David Gorol

solo violinist,

Giovanni Menna Foto

Giovanni Menna

violist, Symphony Orchestra of Bayrischen Rundfunk

Laura Zarina

solo violonist,

Prof. Christiane Edinger

solo violinist, professor for violin at Musikhochschule Lübeck

Chrisopher Jepson

Solocellist, Symphony Orchestra Basel, Amar Quartett

Katharina Landsberg

violinist, Berlin String Quartet

Johannes Moser

solo cellist, professor at Hochschule für Musik und Tanz Köln,

Prof. Xenia Jankovic

solo cellist, professor at Hochschule für Musik Detmold,

Elfa Rún Kristinsdóttir

solo violinist

David Hausdorf

cellist, Munich Philharmonic Orchestra

Helke Menter


Prof. Diemut Poppen

solob violist, professorin at Musikhochschule Detmold

Andreas Grünkorn

solo cellist, NDR Symphony Orchestra

Johannes Przygodda

cellist, scholarship recipient of Deutschen Stiftung Musikleben

Ying Guo

cellist, Konzerthausorchester

Lisa Immer

colo violinist, Berlin

Chouchane Siranossian

leader of the orchestra, Tonhalle St. Gallen/baroque violinist, Switzerland

Simon Bolivar Youth Orchestra of Venezuela

1 violin

Nora Krahl

cellist, Essen

Graham Oppenheimer

violist, United Kingdom