D°
Triads · D root
D°
A tense, unstable triad built from two stacked minor thirds.
0 st3 st6 st
Notes in D°
DRoot
F3rd
G#5th
D is bright and resonant, especially on guitar (open D chord). Very common in folk, rock, and pop.
Identify the Chord Quality on D
Each chord below is played on D. Listen and identify whether you heard D°, Dm, D7, or another quality — the hardest and most useful ear training skill.
Diminished in All 12 Keys
Other Chords in D
Related Triads
About the D° Chord
The D° chord is a diminished chord built on D. It contains the notes D, F, G# — the root, third, and fifth.
A tense, unstable triad built from two stacked minor thirds. Practising the D° chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.