Solved. Can you help me find this free online piano book...

[clarke]

Hi folks,

I recently came across an online book for learning piano. It was by a guy who had spent years finding the best piano learning techniques. The book was initially available to purchase in paper only but he decided to publish it online for free. I remember he advocated the use of hands separate training for the most part. He mentioned using gravity to play the notes. There was also a technique for playing scales fast called something similar to "chord smashing". He was a scientist if I remember correctly.

Annoyingly I forgot to bookmark it and now can't find it at all. Does anyone know which book this might be? I promise I'll bookmark it this time!

Thanks

EDIT: Got it, sweet. I know I'm just a beginner and naive but I just like this guy's style and reckon this book will help a lot:

https://www.pianofundamentals.com

And it was "chord attack" hehe.

[viridian]

Here's the complete book by Dr. Chaun Chang:

www.pianopractice.org/book.pdf

Viridian