This document contains definitions and explanations of various musical chord types including:
- Major, minor, augmented, diminished, dominant 7th, major 7th, minor 7th chords
- Chords with added tones like major 6th, 9th, suspended 2nd and 4th
- Circle of fifths and chromatic circle diagrams showing chord progressions
It provides the musical interval structure of each chord type in a standardized format for easy reference. This is a comprehensive reference document for common chord qualities and their construction.