How To Form & Play Diminished Chords On The Piano
Diminished triads are formed by lowering the 3rd and the 5th of a major triad. (A triad is a 3-note chord). Remember that a major triad is formed from the root, 3rd, and 5th of a major scale. Watch this short video:
For more information on diminished triads click on Diminished Chords