The original plan was to publish it. But I found out this book might be too difficult for the general public because it involves too many aspects. Even I, as a musicians of over 20 years, still feel I need to sit down in a coffee shop and take notes on it in order to digest the information. This book also best benefit the flutists (of course! Mr. Barthold is a flutist) who know all the wind methods and intermediate techniques/musicality with some extent.
So I told my publisher that I am not going to publish it. Before I reconsider it, I might just post it here. I still want this to benefit some wind players... !