The Hoechst Organ Summer is an international music festival presenting 12 to 15 concerts annually
between June and September. They are organized by the Höchst Church Choir in conjunction with the
Justinus Church Foundation. The concerts are held in the Justinus Church, Frankfurt's oldest
building, situated above the old city walls and proud of a beautifully sounding organ (Onimus 1736 /
Kuhn 1988), and in the Justinus Church in Hoechst's Hostatostrasse. Every May the summer
programme can be ordered via fax.