Listener, interpreter or expert - the organ music of Johann Sebastian Bach touches. Just as impressive as the music itself is the effect of the smallest graphic signs in the note graphics of the piece "Wenn wir in höchsten Nöten sein". Prof. Dr. Matthias Schneider from the Institute of Church Music at the University of Greifswald will give you a brief insight into how notes and graphic signs give rise to the lively sound that is Bach's music.