Discovering Music All Around Us/(音乐就在我们身边) -> Learn/(学习)

Discovering Music All Around Us/(音乐就在我们身边) -> #1of3 Beginner/(初学) -> #[Tier 6] Pedagogical Aspects for Children/([第六]教育层为儿童) -> Users Group/(用户群)

Discovering Music All Around Us/(音乐就在我们身边) -> #2of3 Intermediate/(中级) -> #[Tier 6] Pedagogical Aspects for Children/([第六]教育层为儿童) -> Users Group/(用户群)