Kristoffer Dolatko is one of the leading violin teachers in Denmark. He graduated from Feliks Nowowiejski School of Music in Gdansk (Poland) where he studied with Professor Krystyna Jurecka, continuing his studies at the Stanislaw Moniuszko Academy of Music in Gdansk in the class of Professor Henryk Keszkowski.He moved from his native Poland to Denmark in 1990 where he started to teach in Northern Jutland and play in the Aalborg Symphony Orchestra. As a result of his distinguished teaching, Kristoffer Dolatko was invited to be a member of the jury of the Jacob Gade Youth Violin Competition in Vejle. In 2002 he began teaching at the Aarhus Musikskole - one of the best music schools in Denmark. For many years he has enjoyed a very close collaboration with Alf Richard Kraggerud and is often invited to Norway (Barratt-Due Musikkinstitut and Valdres Sommersymfoni).

In 2008 he was appointed to the position of violin tutor at the famous and prestigious Chetham's School of Music in Manchester, where he is working at present with some of the most talented children from Great Britain and abroad.  Furthermore he is professor at the SDMK - Syddansk Musikkonservatorium (Danish National Academy of Music) in Odense. His  students have been awarded many prizes at regional, national (Danish) and international competitions. Kristoffer Dolatko is continuously exploring and searching for new methods of teaching, practising and developing talented young musicians in the best possible way. He has been Assistent Director  of the Astona International Summer Music Academy for many years.

Born in Wales, Ruth Hahn became the youngest leader of the National Youth Orchestra of Wales. At the age of thirteen, she travelled to London to take lessons in Suzanne Rosza’s class at the Guildhall School of Music and Drama. Soon after she joined the Solo Class of Yfrah Neaman, where she graduated with distinction and was awarded several major prizes. A British Council award led to further studies with Ayla Erduran in Geneva, and later to a position in the Lucerne Symphony Orchestra, Switzerland. On returning to London, she played with the English Chamber Orchestra and Covent Garden Opera House. Since then, she has also recorded for BBC radio and performed regularly as soloist and ensemble player in this country and festivals abroad. Ruth teaches at the Guildhall School of Music and at Chethams School of Music, Manchester. She is also invited regularly to teach at prestigious music festivals abroad. She has recorded solo works of Bach and Ysaÿe. Ruth plays on an Italian violin made by Carlo Giuseppe Oddone in 1920. Her passion for modern languages has led her to study the major European languages as well as Russian and takes great pleasure to read world literature in the original.  She joined Astona in 2024 in place  of her husband Detlef Hahn, who was unable to attend due to illness. 

Alf Richard Kraggerud is one of the most successful and respected violin teachers in Scandinavia.  His students have won numerous international prizes over the past twenty years.  Several of his protégées presently enjoy extensive careers, performing with major orchestras, participating in prestigious festivals, as well as appearing frequently in the media, both nationally in Norway and abroad.  One of the first to receive Mr. Kraggerud’s mentoring in practicing skills was his younger brother, Henning Kraggerud, today considered one of the most interesting and exhilarating violinists of his generation. In 1992, after having completed his studies in pedagogy and violin with honors at the renowned Barratt Due Institute of Music (Oslo, Norway), he continued to study conducting in London (classes at the Royal Academyand Morley College). In 1999 he assumed responsibilities for the talent section (pre-school) of the  Barratt Due Institute of Music, an institution at the international forefront of musical education.  Presently, he is the co-director of Barratt Due. Alf Richard Kraggerud is the founder  of the Valdres Sommersymfoni in Norway (initiated in 1994) and has been a member of the faculty of the Astona International Summer Music Academy from 2002 to 2008 and again since 2016.

The Belgian-Israeli violist Nathan Braude has performed in many of the world's most prestigious concert venues including the Wigmore Hall in London, Théâtre de la Ville in Paris, Amsterdam Concertgebouw, Köln Philharmonie and the Palais des Beaux-Arts in Brussels. Nathan Braude has also appeared as a soloist with numerous orchestras including the “Brussels Philharmonic”, “Orchestre National de Lille”, “Orchestra della Svizzera italiana”, "Stavanger Symphony Orchestra", “Gürzenich Orchester, Köln”, “Australian Chamber  Orchestra”, “Orchestre Philharmonique Royal de Liège”, “Symfonieorkest Vlaanderen”, “Limburgs Symfonie Orkest”, “Solistes Européens Luxembourg”. Festival appearances include “Progretto Martha Argerich” in Lugano, “Ravinia Festival” in Chicago ,‘’Festival de Radio France” in Montpellier’’, "Oxford International Chamber Music Festival", Stavanger International Chamber Music Festival" amongst many others.
Nathan's numerous chamber music partners have included artists such as Patricia Kopachinskaja, Vilde Frang, Priya Mitchell, Ilya Gringolts, Mischa Maisky, Sol Gabetta and his wife Polina Leschenko. His début recording for the Fuga Libera label with the complete works for viola, by the Belgian composer Joseph Jongen, has been released to great critical acclaim. Other recordings include the Dvorak piano quartet op.87 released on EMI Classics as part of the “Martha Argerich and Friends: Live from the Lugano Festival 2012” series and Brahms horn trio (viola version) for the Warner Classic label. Prior to his position as first principal violist at the Gürzenich Orchester, Köln, Nathan has held solo viola positions at the Brussels Philharmonic and the Deutsche Kammerphilharmonie Bremen. Nathan Braude has been a visiting professor  at the Royal College of Music in London since September 2024, having been a professort there since 2017. He joined Astona international in 2021. 

Rebecca Firth has built up a reputation as one of the most successful cello teachers in Switzerland over the last 30 years. Many of her former students now have positions in leading orchestras (London Symphony Orchestra, Berlin Philharmonic Orchestra, Bavarian Radio Orchestra, Lucerne Symphony Orchestra), play in well-known chamber music ensembles and are active as cello teachers throughout Europe. 

After completing her studies at the Royal Northern College of Music, London-born Rebecca Firth became a sought-after chamber musician, soloist and orchestral musician. A scholarship from the Swiss government took her to Basel for a post-graduate year with Thomas Demenga, where she continued her career with the Zurich Opera House Orchestra and as principal cellist with the Montreux Festival Orchestra.

She has made CD recordings for ECM with the Hilliard Ensemble and Giya Kancheli, Gavin Bryars and Arvo Pärt and later Bach's Goldberg Variations with the Aulos Quartet.

Rebecca Firth intensified her teaching activities when she was appointed to the Zurich Conservatory in 1995.Today, she is a member of the Talent Committee MKZ at the Zurich Conservatory and continues to lead a class of gifted young musicians. The development of potential at all levels remains a fascinating task for her. She has also passed on her wealth of experience over the years at international masterclasses for young musicians. Rebecca was at Astona in the 2000s in Zuoz already and is coming back in 2025..

Born in Paris in 1962, François Killian entered the Conservatoire National Supérieur de Musique in Paris at the age of 13 to study piano in the class of Jean and Geneviève Doyen. For seven years, he carried on his studies at the CNSM of Paris with Ventsislav Yankoff, adding chamber music, harmony and counterpoint. He won in 1980 the first prize for piano and chamber music and was admitted to post graduate studies in the advanced course. In 1981 François won the ARD International Competition in Munich. In 1983 he left France for two years to study at the Musikhochschule Hannover (Germany) with Karl-Heinz Kämmerling. He recorded with many broadcasting radio stations. François was also prizewinner at the Chopin Competition in Warsaw and Palma de Mallorca in 1985, at the GPA of Dublin, at the Arthur Rubinstein competition of Tel-Aviv and finalist at the Piano Master of Monte-Carlo in 1989 and 1996. He has been invited to play with conductors such as Theodore Guschlbauer, Emmanuel Krivine, Hubert Soudant, Jesus Lopez-Cobos, Grzegosz Nowak and Radoslav Szulc. He was invited to play at Salle Gaveau and Théâtre des Champs-Elysées, Berliner Philharmonie, Konzerthaus Berlin, at the Music Festival La Roque d’Anthéron, at France Musique in Wigmore Hall and in Japan, Malaysia and Taïwan. In 1999 he performed the complete works of Chopin in Germany. Currently a member of the Schumann Quartet (Maya Kadosh violine, Christoph Schiller, viola, François Guye, cello), he is also a appreciated accompanist and partner of a wide range of artists such as Philippe Bernold, Michel Moraguès, Jacques Zoon, Lajos Lencses, Nobuko Imai, Laurent Verney, Gustav Rivinius, Natalie Dessay, Branimir Slokar, Mayumi Shimizu and Estelle Revaz.

After having been an outstanding accompanist at the Geneva, Lausanne and Bern Conservatories, and then of the candidates of the Geneva International Competition and of the International Menuhin Music Academy he has accumulated over the years a considerable repertoire from duet to octet. Today he is the sought-after partner of a wide range of mastercourses and competitions. He is currently piano accompanist at the Bern University of the Arts (HKB). He joined Astona in 2008. 

Joonas Pitkänen, born in 1986 and resident in Basel (Switzerland), is a charismatic and dynamic Finnish conductor. Aside from the Scandinavian Repertoire to which he feels a natural affinity, he is especially appreciated for his interpretations of Shostakovich and his work as opera conductor. His concerts are intriguing and moving. He sees his mission to make music and musicians come first and to render accessible less well-known works and contemporary music to the audience. Based in Basel, Pitkänen was principal conductor of Monferrato Classic Orchestra in Italy and is currently chief conductor of Stadtorchester  Zug in Switzerland.

In 2022 he was handpicked to LEAD! Foundations Excellence Platform for Young Artists where he is being closely mentored by Jukka-Pekka Saraste. 

2023 he was 1st. prizewinner of the International Conducting Competition Città di Beschia-Giancarlo Facchinetti and won a distinction in the 11th Grzegorz Fitelberg International Competition for Conductors. This prize includes concerts in Italy, Romania and the Czech Republic. Further engagements in 2023 and 2024 included re-invitations to the Basler Festival Orchestra and debuts with Helsinki Philharmonic, Turku Philharmonic, Akademisches Kammerorchester Zürich, Hradec Kralove Philharmonic Orchestra and Presidential Symphony Orchestra in Ankara.  

Pitkänen also acts as artistic director of Finnish concert series Feeling blue & white in Basel, which he co-founded in 2014. He has appeared as guest conductor of the Sinfonieorchester Biel-Solothurn, Slovak Chamber Orchestra, Südwestdeutsche Philharmonie Konstanz and Kammerorchester Basel among others. As an opera conductor he has appeared e.g. with Opera Studio Würzburg and newly with Opernkollektiv Zürich where he conducted the World Premiere Production and Recording of Joachim Raffs “Die Eifersüchtigen”.  

Pitkänen studied cello in Hochschule für Musik Basel with Thomas Demenga and conducting in Musikhochschule Würzburg with Ari Rasilainen. He has also participated in masterclasses with Neeme Järvi, Esa-Pekka Salonen, Mark Stringer, Ulrich Windfuhr, Jukka-Pekka Saraste and Hannu Lintu. In addition to his work as a conductor, he is a permanent cellist with the Camerata Zurich and an active chamber musician. He joined Astona international in 2023.

www.joonaspitkanen.com