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ChromaTone* A magical illusion to the ears* A new polyphonic musical instrument* A new method for acquiring perfect pitch* The foundation for a new way of conceptualising musicWhat is a ChromaTone? The 12 ChromaTones correspond to Shepherd Tones centred on the 12 pitch classes found on the piano. Chroma is the Greek for colour. You will find any piece of music can be played using only these 12 colours -- and you will recognise it instantly.What is the illusion?Keep walking round the circle. Each note is clearly a semitone higher than the previous. yet after you have completed 1, 10 or 100 circles you realise the sound of each ChromaTone is constant.How does this help learning perfect pitch?I'm fortunate to know someone with perfect pitch. Through talking with him I discovered that when here's a note he hears primarily the pitch class, or Chroma; he resolves the note into one of these 12 pitch classes and hears the 'chroma' of the note. As a secondary movement of the brain he figures out where on the piano this note is.The Shepard Tone is a perfect representation of the concept of pitch class. It has not been possible until the digital era. This is the cutting edge of music evolution.Of course it is going to take more than this representation to acquire perfect pitch. I am currently developing a set of training games that use this framework. Check out the web link!Why isn't it free?Unfortunately, for the same reason my lunch is not free. However, it is my aim and intention to eventually release all of my work for free. In the meantime, please be patient.