The standard western music notation for the major and minor chords is available in the world. But the understanding of major and minor chords is very difficult for learning peoples particularly children's. It is very complicated to memory of all major and minor chords and also roots of all chords. This invention is easily understand by children and easily captured in standard piano and other instruments. The new method of conveying chords by numerical techniques is used in this invention. The octave notes are derived in to two different heads of major and minor chords by numerical method. There are two main equations are implemented and it is very easy to understanding of all major and minor chords.