The Prague Philharmonic Choir´s extensive repertoire is centered primarily around a cappella, cantata and oratorio compositions encompassing a time span from the Classical era to contemporary production. The choir works regularly with leading Czech and international orchestras, a significant segment in its activity being allotted to opera projects. There, the Prague Philharmonic Choir has frequently collaborated with, among others, the National Theatre in Prague, and most notably with the Bregenz opera festival whose choir in residence it has been since 2010. In the course of the years of its association with the Bregenz festival, it has appeared not only in its productions of all-time classics of the operatic repertoire, but also in several world premieres of new operas.