Music speaks to human beings and they experience its language in their soul. As with language, music has a realm belonging to understanding and knowing which is grasped through music theory, a realm of feeling comprising everything to do with harmony, moods (major and minor), tension and relaxation, and a third realm, that of movement involving rhythm. All three realms are mirrored in the life experience of human beings...Writing a curriculum for music teaching is indeed challenging. Given that the fundamental approach to Waldorf education is a pedagogical one, that is to say, one that is directed towards the development of the child through music, then the task could be described as one of matching the nature of music to the nature of the child. Method and content are inextricably woven together. So both the nature of the child and the nature of music are the starting point for any music curriculum.
The Tasks and Content of the Steiner-Waldorf Curriculum edited by Kevin Avison and Martin Rawson