Apes' language (part 2) Gorilla Coco was educated by F.Patterson american scientist. Coco exspressed not only simple necessities but also complex sensations and emotions, using 375 sign-words. She understood abstract concepts such as "boredom", "imagination", past and futur. Ape Lana studied nearly 60 leksigramm. Lana could make phases with requesting to start the movie or play music. Some apes sing together to enjoy. Two couples of apes enjoyed singing together in Frankfurt zoo at 1974 year.