Harmonic Keyboards


Recent Lambdoma News
and Articles


Barbara Hero's Books
Books by Barbara Hero

Articles by Barbara, 2003 and Prior

Lissajous 200
Music and Healing Sound

Color Mandala

Q&As for Barbara

About Barbara Hero

TRANSLATIONS ~ English to: Translations to Traditional or Simplified Chinese

Pythagorean Lambdoma Harmonic Keyboard

created by Barbara Hero, Patent Pending

Create concordant musical intervals with the harmonic keyboard
add the magic of microtonal harmony to your life and projects
tune into elegant solutions with the harmonic keyboard

NOW! Buy Barbara Hero's
Healing Lambdoma Music in
Downloadable MP3 format!

“There is geometry in the humming of the strings.
There is music in the spacing of the spheres”. (Pythagoras 500BC)

These keyboards are in limited supply.

Four-Quadrant Keyboard
32” by 16” by 2” PC Compatible
Includes 2 overlays, and user's manual.

One-Quadrant Keyboard
17" by 9" by 1.5"
Includes 8 overlays, and user's manual.

Maine requires addition of a 5% sales tax.


I am a healer and a teacher of healing energy. I experienced a profound moment in my life where healing, music, and friendship all blended and became life altering. Barbara Hero invented, and created an instrument of healing that flows to the soul. I experienced the sounds of the Lambdoma pulse through my body.

The physical sensations were facinating as they went to areas within my body that had been expressing as discomfort. Then Barbara changed the mode and the sound traveled to my brain to alert my sore spots to begin to shake loose. As the sounds faded, the energy in the sore spots would turn to a wave of release. My body seem to crave more vibration and my mind relaxed into peace.

Barbara then asked me to pick the chords. Picking the cords myself was powerful and when they were played, I felt it in my heart center.

I released what may have been years of emotional stress. Barbara asked me what word came into my mind. All I could hear was the word "Faith". As Barbara had me pick from each mode I became one with the process of healing and sound.

This was a loving and freeing experience that will become a special part of my soul's journey.

Thank you Barbara, I love you.
Rev. Cyndy Mayer


Orders can be placed immediately by voice 207-251-8361,
or by  email Barbara Hero

Keyboard FAQs

Here are a few photos of the original 1-quadrant keyboard.

My dream was to realize the application of my theories in the health and musical domains. Recently I have accomplished a breakthrough in making the lambdoma a concrete instrument of healing and auditory pleasure.  With the help of engineers, software programmers, musicians, and electronics manufacturers this dream has materialized in the Pythagorean Lambdoma Harmonic Keyboard (PLHK).

Based on early prototypes of this revolutionary instrument we have demonstrated its unique effects on human well-being and musico-spiritual evolution. Articles and testimonials from well-known authors on sound healing, microtonal composers, and university professors are available upon request.  

If you have access to  IEEE Explorer  you can download The Lambdoma matrix and harmonic intervals, B. Hero and R. Foulkrod, IEEE  Engineering, Medicine and Biology Magazine, Vol 18, pp.  1999.   You may access several other articles on the Lambdoma and its relation to this instrument on MedLine (Search keyword: Lambdoma).

Players of these keyboards have experienced increased physical comfort and spiritual awareness within which they were able to learn answers to their questions including their life's purpose and how to become more spiritually aware. The diamond-shaped Keyboard, with 64 keys, produces harmonic stereo intervals, with the second tone relating to the player's chosen fundamental, based upon the whole-number ratios of the Lambdoma Matrix.  When accompanied by a PC  (not included) the  keyboard may used as a device for sound therapy,  musical composition and  performance.  The keyboard is fully software programmable and is both DOS/Windows and Amiga compatible. Additional software will be available for programming the midi interface.  The unit comes with a user manual. Eight color-coded overlays placed over the keys provide visual cues on musical notation, frequencies, harmonics and solfegio encoded into the keys.  The versatile electronic keyboard is constructed in an attractive and durable diamond-shaped, aluminum encasement suitable for on-the-road use.

The PLHK is a harmonic microtonal musical instrument.
The PLHK is a physiological and psychological tool for therapists.
The electronic circuit of the PLHK is based upon a harmonic array of ratios.

THE PLHK KEYBOARD has the unique capability of sounding any musical interval in a matrix of harmonic frequencies in the audible range. Its diamond-shaped matrix holds 64 keys in one quadrant. A total of 256 keys in any microtonal keynote may be played. Each keynote produces harmonic stereo intervals relating to the player's chosen keynote. Overlays of the three other quadrants in colors and frequencies of the musical notes (in a C scale) are included. Since another set of overlays of the intervals are based upon geometrical ratios, the shapes of the musical intervals may be seen as the keys are pushed. A user's manual is included on both a CD and on a floppy disk.

THERAPISTS and clinics will find that many clients playing the keyboard show stress reduction, access to their inner self, balancing of the physical, mental, emotional and spiritual bodies and relief of pain. Over two hundred and fifty players of these keyboards have experienced increased physical comfort and spiritual awareness within which they were able to learn answers to their questions including their life's purpose.

MUSICIANS will have the ability to play microtonal music in real time and experience harmonic and sub-harmonic interval sounds. A midi software program "Fractal Tune Smithy /Lambdoma" composed especially for the Lambdoma Keyboard enhances the musical capabilities of the keyboard.

Photo of Barbara HeroOperating Instructions: 5 pages, Adobe Reader .pdf format

User's Manual: 5 pages, Adobe Reader .pdf format

Lambdoma-Midi-Keyboard-Setup: (newer keyboards) 2 pages, Adobe Reader .pdf format

Lambdoma-Com-Ports-Keyboard-Setup: (older keyboards) 2 pages, Adobe Reader .pdf format

Home / Keyboard /Research / Recent Lambdoma News / Barbara's Books / Barbara's Articles thru 2003
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See more original research at Barbara's archived websites:

International Lambdoma Research Institute (ILRI) &
Strawberry Hill
Strawberry Hill Farm Studios (SHFS)

Copyright © Barbara Hero 1996-. All rights reserved.                                    email: bherolambdoma@gmail.com

Web Pages Updated by: Kristi Borst. Ad·Mark·Com