Aleatory/(偶然) -> Formalism/(形式主义) -> Structure, Musical [Str]/(音乐与结构)

Aleatory/(偶然) -> Formalism/(形式主义) -> Tier 2 Practical Aspects Primarily for Composers/(第二层实践方面主要针对作曲家) -> Users Group/(用户群)

Aleatory/(偶然) -> Formalism/(形式主义) -> Practise/(实践) -> Step 4 Postgraduate/(第四步研究生) -> Years Group/(年级群)