These frequent concerts are organized for visitors, who maybe not often listen to classics, but in the surroundings of Salzburg cannot resist to visit a concert in a romantic "Kights Fortress." Performing ensembles are often small local orchestras or groups. They play almost always a few "standard" pieces, such as Mozart's Eine Kleine Nachtmusik. In many cases these performances are not so perfect as we would expect it in a high rank Philharmony, but they are nevertheless very unique and attractive.