Acoustic Learning, Inc.
Absolute Pitch research, ear training and more


Ear Training Companion v5


Three separate scientific studies have shown
100% of children
trained with this method
gained absolute pitch for the seven "white key" tones.*

Click the image for a larger screenshot.

- How it works -

Chordhopper activates your mind's natural perceptual strategies, using chords to make you hear pitches.  The first two chords used are CEG and CFA:

By attentively identifying each of these two chords, you will automatically begin to hear the shared pitch (C) as a separate and unique sound.

You don't have to try to do this; you don't have to figure anything out.  You simply play Chordhopper, and your unconscious mind will extract the pitches for you.

Then the next chord is BDG, which brings out the G.

Then the chords are inverted, to reinforce the sound of a pitch across octaves.

After only nine chords, you will have automatically learned to hear all seven pitches of the C-major scale in multiple octaves.

The training then continues with many more chords, some of which will introduce the "black key" tones, and others which continue to reinforce the "white key" pitches across multiple octaves.

- Children?  What about adults? -

The research* has shown this method to be effective for 100% of children aged 2-4, even when it is the only form of musical training the children receive.

If you're 5 or older, this method alone will not give you absolute pitch.  A person of any age will automatically learn to hear all 12 tones as separate, individual, and unique.  While that's enough for a preschooler to acquire absolute pitch, an adult must also learn to detect the tone chroma.

That's where Absolute Pitch Avenue comes in.  Absolute Pitch Avenue trains you to detect and recognize the tone chroma characteristic necessary for learning absolute pitch.

- No risk, satisfaction guaranteed -

You will hear recognizable results very quickly, and your perception and performance will continue to improve as your ear learns more and more every day. If you aren't satisfied, for any reason, your purchase is protected by a 100% money-back guarantee.

Try it today!

Download demo for Mac OSX

Download demo for Windows


Oura, Y. and Eguchi, K. (1982). Absolute pitch training program for children. Ongaku Kyouiku Kenkyu (Music Education Research), 32, 162-171.

Sakakibara, A. (1999). A longitudinal study of a process for acquiring absolute pitch. Japanese Journal of Educational Psychology, 47.

Sakakibara, A. (2004). Why are people able to acquire absolute pitch only during early childhood?: Training age and acquisition of absolute pitch. Japanese Journal of Educational Psychology, 52(4), 485-96.

For Macintosh
(download, $39)

For Windows
(download, $39)

mailed to you
in the USA
(Macintosh and Windows, $49)

mailed to you outside the USA
(Macintosh and Windows, $54)