The system is menu driven which makes it easy to go from scales to chords theory dictation solfeggio in any order. Scales Chords Theory should be memorized. Dictation and Solfeggio range from simple to difficult. A piano keyboard is used to help visually picture the scales chords dictation and solfeggio. All the major and minor scales are presented. Please read the README FILES. The tonic sub-dominant and dominant chords are covered with their 1st and 2nd inversions in both major and minor. I have also included some definitions. I know its not comprehensive enough but its a start. Your computer must have speakers to use this system. The Theory covers how scales are composed time values how chords are formed key signatures how to take dictation and notes on solfege. There is a facility to print the scales (majorminor). There are about 250 programs in this system and they were tested on Win 7 XP Vista an 98. They should run on various size monitors. They are NOT intended for non windows computers.