Attention! Piano keyboards have a manufacturing defect.

- discovered by Gregory Shir!

U.S. Patent No. 9064478
Piano incomplete

Learn about the new, equal-sized, easier-to-play keys on
Mozart Best Piano

Testimonial from Ms. Alvina Louie on her satisfaction with her Mozart Best Piano:

"I would like to spend some time explaining how the changes Gregory has made to the piano keyboard has improved my playing:
I have been playing the piano for the past 20 plus years and tried different pianos all over Southern California. I've played the pianos in the Steinway showroom also.

In short, Gregory has made subtle changes that allow the older students like me who have less flexability to play difficult passages with more ease.
These changes include longer black keys with sharper edges and raised ends to catch the fingers.

The C# and D# keys are closer together.
The three black keys F#, G# and A# are spaced such that less lateral movement is needed.

As per our phone conversation, I tried out 2 uprights, a Boston and an Essex. I found my hands don't seem to hit the white keys well. I mentioned to the sales lady that I felt my hands weren't big enough. She told me they were "standard size even children could play." - Then again, I've been playing on your adjusted keyboard which seems to be more suited to the hand.

I suggest trial playing on Gregory's keyboard for comparison." -- Ms Alvina Louie


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A Letter from Gregory Shir to all pianists:

Dear Pianists,

I am an inventor and a professional music teacher Piano and Violin. I have written a book entitled "The Paganini Technique".

In the process of building violins, I have been able to prove that a well-formed instrument is important to make difficult passages easier.
This is also true of the piano. I noticed something that centuries of piano professionals have overlooked: THE PIANO KEYS ARE NOT EQUIDISTANT!

Nobody seems to know why the piano layout was designed this way, but one thing is for sure, it causes awkwardness at many points in a performance.

Lay a finger between C# and D# notes, now lay your finger between F# and G# - you can feel the difference between the two pairs, even though it's only about 3mm.

In addition, on my keyboard, the black keys are slightly extended: I've changed the angle of the ends from a greater angle to a lesser angle. These changes make a big difference when trying to sightread the notes and not watch your hands at the same time.

Now that we have our US Patent, we can demonstrate to you that there is VERY LITTLE change from a standard keyboard. You will not experience a change except for the better. You will simply feel that the keyboard is easier to play.

Bruce Stevens, piano technician, first look
Bruce Stevens, piano technician and Gregory Shir
- first look.
"A little change, but a big difference!"

Any keyboard can be modified:
Yamaha DGX modified to Mozart Best Keyboard
Yamaha DGX modified to Mozart Best Keyboard

Bach English Suite - Gigue No.2 A minor-1st Hranush Martirosyan


Mozart Younger Mozart Younger 2
What kind of piano did Mozart play?


Q: I'm looking at the picture, it looks like a regular keyboard. What's the big deal?

A: It IS a regular keyboard. The relative position of the keys to each other has been adjusted to produce consistant spacing because nearly all pianos have different distances between keys.
It's only about 3mm, but that is a big difference when you are trying to be able to sightread, rather than watching your hands.
And the black keys are a little less angled, that's all.

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U.S. Patent No. 9064478

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