In 1607, however, King Charles IX transferred the premises exclusively to the Germans. Hans Jakob Kristler enlarged the chapel in 1638-1642 to the present two-nave church. During the 17th century, while the choir of the school participated at the royal concerts, the church became an important centre for church music in Sweden. A crypt, construction on which was started in 1716 but was interrupted 1860-1992, is still in use by the parish. By 1800, the German congregation had dwindled to a mere 113 people, and in 1878 a fire destroyed the tower. Today the German parish sorts under the Church of Sweden but as a so-called non-territorial parish, the approximately 2,000 members of which are found all around Stockholm. Services in German are still held every Sunday at 11 am, and the church is open daily during summers and at weekends during winter.