The BUND want residents and tourists Berlin animate for donations for the preservation of endangered 400,000 city trees. The Agency solved the task very imaginative: they organized a charity concert with an original Testimonial - a 100 year old chestnut tree. For him, especially a unique musical instrument was built, a touch-sensitive membrane construction. This made each falling chestnut partly an artistic blend of sound and light. Could be donated via SMS. In appreciation of the tree played a personal message. Following an additional remix of the tunes was recorded and released on iTunes in order to give everyone the chance to enjoy the Tree Concert. (www.bbdo.de)