Summer evening in mixed forest in Estonia. Birds are mostly silent, because breeding season is over. A Green Bush-cricket (Tettigonia cantans) is singing continuously in the bushes. For attentive listening there are a lot of tiny acoustical details to focus on - occasional chattering of Blackbirds, faint sounds of frogs croaking, shuffling of mice and insects, crackling of twigs as a Moose stumbles in the bush further away.