Kofler has performed as a soloist with over 90 internationally renowned orchestras such as the Academy of St. Martin in the Fields, the , the Philharmonic, and Symphonic Orchestras of Munich, Calgary, Prague, Tokyo, Kyoto, Ljubljana, Zagreb or the Zagreb Soloists under conductors such as Massel, Levine, Luisi, Kitajenko, Brüggen, Koopman, Graf, Nott and others and has performed at various festivals.