TRILLING at Aningahof, Zwolle In 2019 20 March, 2019 TRILLING VIBRATIONSound-architecture. The artwork is situated in the park, walking through the object you can sound the three metal tubes by yourself, creating loud vibrations.© Rob Sweere 2019 TRILLING is now part of the collection of the sculpture park Aningahof in Zwolle, The Netherlands.