From the 17th – 23rd September, 2012, the Federal Environment and Nature Conservation Germany (BUND) and BBDO Proximity Berlin teamed up to create a memorable concert experience at the Monbijoupark in Berlin. A 100 year-old tree made music with the help of a membrane construction/light installation built under it. Whenever a chestnut fell, the impact on the sculptural membrane created spherical sounds. Along with the wind and the creaking of the tree, it resulted in a unique organic composition. BUND hopes to promote awareness and preservation about the shrinking chestnut tree population. BBDO Proximity Berlin came up with the striking idea, the design was implemented by creative pool of Gang of Berlin, and Ketchum Pleon PR provided the background music.