New Guitar Chords database for Android devices. 21 chords per key, 12 keys, 3 variations per chord, for a total of 756 chords. Includes the following chords in all 12 keys: major, minor, 7, m7, maj7, 6, m6, 9, m9, maj9, 6/9, 7+5, 7-5, 9-5, 5-, diminished, augmented, sus4, 7sus4, 11, 13.