National Youth Choirs of Scotland Music Videos Pre 5years up to end of KS2NYCOS has developed a series of video resources that parents and children can use at home to develop musicianship skills while having fun. These musical games and activities can be adapted by specialist and non-specialist teachers to just use the clapping and body percussion elements. Our resources, which are suitable for all ages, are based on the educational principles and teachings of Zoltán Kodály.