(Bilder: Rundfunk Kinderchor Berlin ; Enrico Verworner/ www.enrico-verworner.de ; Digital Property LTD/ www.istockphoto.com ; sxc.hu/omar_franc ; Enrico Verworner ; Business Network Berlin; Robert Neukum/BerlinOnline; CreativeCommons/Allie_Caulfield; Maximilian Meisse)