A♯dim
Diminished · A♯ – C♯ – E
- A♯R
- C♯m3
- E♭5
Guitar voicings
Piano
- Root
- Third / sus
- Fifth
- Sixth / seventh
- Extension
About the A♯dim chord
The A♯dim chord (Diminished) is built from A♯ (the root), C♯ (a minor third) and E (a diminished fifth). Diminished triads are tense and unstable, often used as passing chords between stronger harmonies.