During the initial tuned city event in Berlin in the summer of 2008, almost 100 artists, architects and thinkers gathered together in a variety of locations around the city to discuss issues of sound and architecture. The ongoing project draws the traditions of critical discussion about urban space within architecture and urban planning discourse – as well as its strategies and working methods – into the context of sound art. This expanded discussion reinforces the potential of the spatial and communicative properties of sound as a tool and means of urban practice. tuned city continues as a platform, exploring other cities and locations with their own cultural and social settings, working theoretically and practically on the question how sound and architecture are related. The panel will introduce general ideas that mark the field of research and present recent planning developed by tuned city for ISEA 2010 (in collaboration with the KHM Cologne) and for the European Cultural Capital Tallinn in 2011.