Principles include mastery of knowledge and skills, creative performance, etc., and methods and methods include observation, feedback, etc.

1. Evaluate whether students have mastered basic music knowledge and skills, including music theory knowledge, performance skills, musical expression, etc.

2. Evaluate whether students have creative thinking and expression, and whether they can show their own characteristics and style in music creation and performance.

3. Evaluate students’ skill level and performance ability by observing their performances and performances.

4. Help students improve and enhance their musical performance abilities by providing feedback and opinions to students.