Basically all are in major keys.

The melody characteristics of primary school music are basically in major keys.

Features: 1. Major keys, mostly C major. Because children’s vocal range is basically here, this is also the style requirement for children’s songs. 2. The songs are all positive, easy to understand, and full of positive energy. 3. They are all based on songs, which is different from today’s pop music. Rock music incorporates a lot of musical elements. 4. The lyrics should also be healthy and educational. It has the purpose of guiding children to learn.