"Cetacea" is the Latin term for the group of marine mammals which includes whales; Fahres examines the relationship between the rhythmic structures of the clicking noises of dolphins and the polyrhythms of Senegal, as played by Doudou NiDiaye Rose, the master of the sabar drum and his ensemble; this composition consists of a recording of the ultrasound tones made by dolphins in the Duisburg Dolphinarium and subsequently transformed into audible frequencies; the concert is the tape version in 5.1 surround - following the concert, there will be a film which documents Cetacea; Supported by the Gaudeamus Contemporary Music Center, the Netherlands.