Studies with Adelina Oprean in Basel, Sándor Végh at the Mozarteum Salzburg and at the International Menuhin Music Academy with Alberto Lysy.
He completed his formation with Walter Levin, Hatto Beyerle, Siegmund Nissel, Yehudi Menuhin and Joseph Silverstein.
In 1994 he founded the Ligeti String Trio, winning several competitions among which the Osaka International Chamber Music Competition in Japan.
As a soloist, Igor Keller performed with orchestras such as the Orchestre Philharmonique de Strasbourg, the “Nouvel Orchestre de Radio-France”, the Sinfonieorchester Basel, the Württembergisches Kammerorchester as well as the Camerata Academica Salzburg.
Member of the renowned Amar Quartet since 2006, Igor Keller played in most major venues in Europe, such as the Wigmore Hall, the Lucerne Festival, the Tonhalle Zurich, the Menuhin Festival Gstaad, the Lockenhaus Festival, etc.
He has extensive orchestra experience as well, being a guest concertmaster with numerous symphonic and chamber orchestras and being since 2010 first concertmaster of the St. Gallen Symphonic Orchestra.
Recordings include CDs for “Musiques Suisses”, NEOS, Léman Classics as well as the complete Hindemith string quartets for Naxos.