Tony Nys started his musical training at the age of five taking up violin lessons with Tomiko Shida. Later he continued his studies at the Koninklijk Conservatorium Brussel with Clemens Quatacker and Philippe Hirschhorn. Between 1994 and 1997 he was the first violin of the Fétis string quartet, attending masterclasses with the Alban Berg Quartet, the Borodin Quartet and the Amadeus Quartet. Ever since chamber music has been a natural environment for him. As a violist in the Danel Quartet from 1998 till 2005 he played worldwide in numerous festivals, recordings and performances of newly composed pieces.

Besides he shared the concert stage with many renowned artists and ensembles such as the Borodin Quartet, the Brodsky Quartet, the Petersen Quartet, Vladimir Mendelssohn, Garth Knox, Gérard Caussé and Frank Braley. Tony Nys has a special interest in contemporary music and worked with composers as Helmut Lachenmann, Wolfgang Rihm and Pascal Dusapin. With the Danel Quartet, he has been teaching at the Witten-Herdecke University in Germany and at the CNSM in Lyon. 

Since 2005 he has regularly worked as a freelance musician with ensembles such as Prometheus, Ictus, Ensemble Modern, Explorations, Trio Fenix, TertraLyre…

Tony Nys has been viola solo in La Monnaie Symphony Orchestra since 2007 and in that position he was also invited by the Frankfurt Rundfunkorchester. He teaches viola and chamber music at the Koninklijk Conservatorium Brussel and at the Fontys Muziekhogeschool in Tilburg.