How to write the preface to the music book?

In fact, I personally think that no matter what book it is, it is better to write out the reasons and wishes for writing it in the preface! You can express your sincere feelings of creation, and you can also write down your understanding of this book, why you want to write this book, and what you hope to bring to yourself and others through this book. Personally, I think you should be able to write like this! Free expression is the most touching.

As for the format, just find a book to imitate! It should not be difficult! ! If I finish it one day, I hope you can send me a copy to share, hehe ~, ~