Poetry and ode to a river that was born from a French resurgence and that ends its course in the North Sea in the Netherlands. From winter to summer, to each season its region and to each region its theme. From music of medieval inspiration to industrial music, through the strangest sounds inspired by wooded banks, cliffs, caves, foggy banks, industrial areas, cities and natural beauties, architectural heritage, human activity.

A journey of 950 kilometres in the form of improbable installations in unique settings, the keyboardists are inspired by the places and are joined by other French, Belgian and Dutch musicians for improvisation sessions.