Kaja Nowak performs across Europe as a soloist, recitalist and chamber musician. She has shared the stage with artists such as Ivry Gitlis, Philippe Graffin, Jean-Marc Philips Varjabedian, Gary Hoffman, Raphael Wallfisch, Nobuko Imai, Christian Ivaldi or Jean-Claude Vanden Eynden among others, as well as with many exciting musicians of her generation. She is regularly invited to perform at chamber music festivals including Musiq3 Festival, Iedereen Klassiek, Klarafestival, Schiermonnikoog, Resonances, Midis-Minimes, Rome Chamber Music Festival, Lake District Summer Music, North Norfolk Music Festival, Grachtenfestival; she has also participated in the Open Chamber Music sessions at IMS Prussia Cove in the UK and performed in venues such as Concertgebouw and Muziekgebouw aan t’IJ in Amsterdam, Anton Philipszaal in The Hague, Flagey in Brussels, or Concertgebouw in Bruges.

Kaja’s discography includes several critically acclaimed albums, most recently with chamber music works by Grażyna Bacewicz, recorded with the Karski Quartet and pianist Jâms Coleman, and two discs of Boccherini’s string quintets, recorded with the Karskis and cellist Raphael Fëye, for Evil Penguin. Past releases include two albums recorded with the St. George Quintet (British Legends with works by F. S. Kelly, Bliss, Elgar and Vaughan Williams, and Bohemia Express, with music by Dvořák, Janáček and Suk) as well as À la Valse, with Enescu's Octet for strings and a new transcription of Ravel's La Valse for string nonet, recorded with a small string ensemble led by Philippe Graffin. A premiere recording of Kevin Raftery's Concerto for two violins and small orchestra, recorded with Philippe Graffin and the BBC Scottish Symphony Orchestra led by Robertas Šervenikas will be released in 2026. Kaja's recordings have been broadcast by classical music radio stations such as the British BBC3, Dutch Radio4, and Belgian Musiq3 and Klara.

Since her debut at the age of 13 with the Rzeszów Philharmonic Orchestra, Kaja has appeared with orchestras in Poland, Germany, the UK, Belgium and the Netherlands. She is a laureate of several Polish competitions as well as the recipient of the Stage Personality prize, awarded upon her graduation from the Royal Conservatory in The Hague, and the Prix Georges Octors, awarded by the city of Brussels. She studied with Konstanty Andrzej Kulka in Warsaw and with Philippe Graffin in The Hague and Brussels.