His first teacher was his father, who gave him his first violin lessons when Martin Stegner was eight. After studying with Roman Nodel at the Mannheim Musikhochschule, he switched to the viola and then went for training to Neithard Resa and Wilfried Strehle in the Berliner Philharmoniker’s Orchestra Academy. His first engagement was in 1993, as principal viola of Berlin's Deutsches Symphonie-Orchester. Three years later he moved to the Berliner Philharmoniker. Martin Stegner performs as a soloist and chamber musician in Europe, America and Japan. He also works with the Gustav Mahler Jugendorchester and the Orquesta Juvenil Centroamericana and has given courses at Yale University and the Academy of Music Hanns Eisler in Berlin. He is actively involved in expanding the viola’s repertoire. Together with the pianist Tomoko Takahashi, he has released several highly acclaimed CDs of transcriptions of lieder by Robert Schumann. He has been a keen jazz musician since his youth, and has appeared at numerous festivals, performing with artists such as Herbie Mann, Diane Reeves, Thomas Quasthoff and Nils Landgren. A co-founder of the Berlin Philharmonic Jazz Group, he founded the ensemble Bolero Berlin in 2008 in which he and soloists of the Berliner Philharmoniker dedicate themselves to South American music. In 2015, an album was released together with the German/Persian singer Cymin Samawatie on the ECM label. Martin Stegner is involved in other projects with, among others, Simon Stockhausen and the Chinese sheng virtuoso WuWei. His work has been documented on 18 CDs.

Hailed by Gramophone Magazine as "one of the finest among the astonishing gallery of young virtuoso cellists", German-Canadian cellist Johannes Moser has performed with the world’s leading orchestras such as the Berliner Philharmoniker, New York Philharmonic, Los Angeles Philharmonic, Chicago Symphony, BBC Philharmonic at the Proms, London Symphony, Symphonieorchester des Bayerischen Rundfunks, Koninklijk Concertgebouworkest, Tokyo NHK Symphony, Philadelphia and Cleveland Orchestras with conductors of the highest level including Riccardo Muti, Lorin Maazel, Mariss Jansons, Valery Gergiev, Zubin Mehta, Vladimir Jurowski, Franz Welser-Möst, Christian Thielemann, Pierre Boulez, Paavo Jarvi, Semyon Bychkov, Yannick Nézet-Séguin, and Gustavo Dudamel.

Johannes recently won his 3rd ECHO Klassik award as ‘Instrumentalist of the Year 2017’ for his Russian Recital disk on the label PENTATONE, for whom he records exclusively. His latest recordings include the concertos by Dvořák, Lalo, Elgar and Tchaikovsky, which have gained him the prestigious Preis der Deutschen Schallplattenkritik and the Diapason d'Or. He will return to the recording studio in late 2017 to record Lutoslawski and Dutilleux concertos.

In the 2017/18 season, Johannes will return to the Chicago Symphony Orchestra, Orchestre de la Suisse Romande, Tonhalle Orchestra Zurich, Los Angeles Philharmonic, Danish National Symphony, Netherlands Radio, Orchestre National de Lille, City of Birmingham Symphony Orchestra, New World Symphony, Seattle and San Diego Symphony.

With his newly formed piano trio with Yevgeny Sudbin and Vadim Gluzman he will tour extensively in the coming season throughout Europe and North America. A dedicated chamber musician, Johannes has performed with Joshua Bell, Emanuel Ax, Leonidas Kavakos, Menahem Pressler, James Ehnes, Midori, and Jonathan Biss. He is also a regular at festivals including the Verbier, Schleswig-Holstein, Gstaad and Kissinger festivals, the Mehta Chamber Music Festival, and the Colorado, Seattle and Brevard music festivals.

Renowned for his efforts to expand the reach of the classical genre, as well as his passionate focus on new music, Johannes has recently been heavily involved in commissioning works by Julia Wolfe, Ellen Reid, Thomas Agerfeld Olesen, Johannes Kalitzke, Jelena Firsowa and Andrew Norman. He will take part in the European Premiere of Gubaidulina’s Triple Concerto with the Zurich Tonhalle Orchestra. In 2011 he premiered Magnetar for electric cello by Enrico Chapela with the Los Angeles Philharmonic conducted by Gustavo Dudamel, and in the following season he continued this relationship with the orchestra performing Michel van der Aa's cello concerto Up-close. Throughout his career, Johannes has been committed to reaching out to all audiences, from kindergarten to college and beyond. He combines most of his concert engagements with masterclasses, school visits and preconcert lectures.

Born into a musical family in 1979, Johannes began studying the cello at the age of eight and became a student of Professor David Geringas in 1997. He was the top prize winner at the 2002 Tchaikovsky Competition, in addition to being awarded the Special Prize for his interpretation of the Rococo Variations. In 2014 he was awarded with the prestigious Brahms prize.

A voracious reader of everything from Kafka to Collins, and an avid outdoorsman, Johannes Moser is a keen hiker and mountain biker in what little spare time he has.