This course is the mastery of knowledge and technical skills for creating and arranging musical works in the form of vocal groups, choirs, musical ensembles, to be applied in the world of education in schools from junior high school to senior high school (SMA) level. The discussion begins with understanding the sound area of children to teenagers, then getting to know the musical instruments that are widely used by children and teenagers at school, then applying it by making a song with musical accompaniment for children and teenagers.