Here’s a few real live testimonials taken from  Amazon and Ebay:

Amazon.in 5 star ****  Amazing Chords

Plenty of Apps are available for keyboard chords!

But if you are looking for printed version of all the possible keyboard / Piano chords combination then I can recommend this book for you.


Amazon.com 5 star *****  Five Stars


Amazon.com 5 star ***** A very good book regarding piano skills & more

This book actually helped with increasing my piano skills.


 Amazon.ca 4 star *****  Four Stars

Very nice and concise.


Amazon.co.uk  5 star *****  Book

This is a book. It has printed therein explanations and diagrams of piano chords. The print is clear and the book is readable.