This question is simple:

First of all, the attitude should be sincere, natural and not artificial. Use true talent and correct attitude. And you have good positive energy and positive personal personality.

A well-prepared written application that includes ideas, expertise, and contributions.

During the interview and talent show, if you can introduce yourself, give a brief self-introduction. Smile and be confident. The content is a combination of music, dance, and recitation. It is best if you can perform with musical instruments. Or a narration of an allusion, a talk show, etc. Because your specialty is classical music appreciation. The concept of appreciation is too broad. Not sure of your range and level of classical music mastery. So I can only suggest you the above program choices.

Talent content and talent attitude should be weighed based on your actual personal situation. Topic selection and presentation are also important.

After the performance, you can give a brief summary and express your hope that everyone will like it and make corrections.