The starting point for me is the question of the extent to which musical tuning systems that differ from the equal temperament we use today can trigger specific emotional moods in the listener. In this context, I introduce various tonal systems of European and non-European music history in order to show characteristics, differences and developments. The "well-tempered moods" of the 18th century, musical key characteristics and the doctrine of affects are compared with the raga and the rasa doctrine of North Indian art music. Both systems claim to be able to trigger specific emotions in musicians and their listeners using purely musical means.

With the help of appropriately tuned instruments, I will introduce you to different worlds of sound, make the theoretical background audible and give examples of the music created in the respective systems.