ORKESTAR ISTARSKOG NARODNOG KAZALIŠTA - osnovan je koncertne sezone 1995/96. Na svom repertoaru ima djela Sorkočevića, Mozarta, Händela, Telemanna, Boccherinija, Vivaldija uz nezaobilazna djela suvremene hrvatske i svjetske glazbe.

ISTRIAN NATIONAL THEATRE ORCHESTRA - was founded during the 1995/96 concert season. Its repertoire includes the works from Sorkočević, Mozart, Haendel, Telemann, Boccherini, Vivaldi and the contemporary Croatian and world music.