Fenomeni sonori came about as a result of an invitation from Zeno Gabaglio. Valentina Pini and I, Micha Seidenberg, were asked to make two 25-minute contributions for the programme ‘Mixtape’ on Radio Svizzera Italiana. The result was a radiophonic work that playfully approaches four sound phenomena. For this, we travelled to specific locations and recorded our experiences and playful explorations with field recordings. We used most of the resulting material without major intervention. Here and there, however, the field recordings suddenly drift off into a magical, compositionally developed sound world, whose material still recalls its recording locations, but leaves its physical boundaries behind and enters the magical world of electroacoustics.