E°
Triads · E root
E°
A tense, unstable triad built from two stacked minor thirds.
0 st3 st6 st
Notes in E°
ERoot
G3rd
A#5th
E is the most natural guitar key — open strings resonate. Dominant in blues, rock, and metal.
Identify the Chord Quality on E
Each chord below is played on E. Listen and identify whether you heard E°, Em, E7, or another quality — the hardest and most useful ear training skill.
Diminished in All 12 Keys
Other Chords in E
Related Triads
About the E° Chord
The E° chord is a diminished chord built on E. It contains the notes E, G, A# — the root, third, and fifth.
A tense, unstable triad built from two stacked minor thirds. Practising the E° 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.