I have found this a very helpful book, though I guess consultations with an Alexander Technique consultant would be even more helpful, if I could afford it! In the end so many of us adopt bad postures - I am a guitar player - but also in so many aspects of life, that we end up with back and other problems that using the Alexander Technique would prevent.
The Alexander Technique has been applied to other aspects of human life to great fact. Why would I not explore it in music too. I recommend this ebook and would suggest that the readers approach it with an open mind..