Realization of programs Antica e moderna, Missa Adventus et Quadragesimae and Cantus gregorianus et organum is contingent upon the presence of the organ with appropriate disposition and in a good technical condition.

All concert programs mentioned above last app. 60-70 minutes without an interval. Concerts are held in church interiors for which this style of music was also predestined. Concerts may be held off churches only exceptionally for defendable reasons.