Minor 6th Chords: How To Form Them On The Piano PlayPiano Posted on September 18, 2009 by DuaneNovember 25, 2020 MInor 6th chords are formed from a major triad by lowering the 3rd and adding the 6th note of the major scale. For more complete information please go to: https://www.playpiano.com/101-tips/9-minor-6-chords.htm