For their jubilee exhibition Why Do Shoes Rub and Other Questions, Contemporary Art Museum of Estonia (EKKM) organised the Complaints Choir of Tallinn. Oliver and I created the concept in 2005, and ”open-sourced” it in 2006 for anyone to use. The video documentation of the new complaints choir, composed and directed by Florian Wahl, can be seen in the exhibition, which also includes works by Alexei Gordin, Bogna Luiza Wiśniewska, Eric Andersen, Finnegan Shannon, Flo Kasearu, Herman Halliste, Mari Möldre & Margus Tammik, Marta Konovalov, Rait Lõhmus and Taavi Piibemann.