Standard
A♯ diminished seventh · Open position
A♯dim7 guitar chord
What it is
Root
Notes
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How to play A♯dim7 on guitar
The most common way, the first shape above: your index finger on the A string at the 1st fret, your middle finger on the D string at the 2nd fret and your ring finger on the B string at the 2nd fret. Let the G and high E strings ring open. Don’t play the low E string.
From the low E string x 1 2 0 2 0 (x: not played, 0: open)
What notes are in A♯dim7?
A♯dim7, A♯ diminished seventh, is A♯, C♯, E and G: the root (A♯), the minor third (C♯), the diminished fifth (E) and the diminished seventh (G). Its formula is 1 ♭3 ♭5 ♭♭7.
Why do four diminished seventh chords have the same notes?
A diminished seventh is minor thirds stacked all the way round, A♯, C♯, E and G, so A♯dim7 has the same notes as the diminished sevenths on C♯, E and G. Any of its notes can be the root.
More B♭ chords on guitar
B♭brightB♭msadB♭7the pullB♭maj7dreamyB♭m7mellowB♭sus2openB♭sus4openB♭add9sweetA♯dimthe edgeB♭auguneasyB♭6sweetB♭m6bittersweetB♭9the pullB♭7sus4openB♭5rawA♯m7♭5the edgeEvery B♭ chord ›
Diminished seventh chords in every key
Cdim7the edgeC♯dim7the edgeDdim7the edgeD♯dim7the edgeEdim7the edgeFdim7the edgeF♯dim7the edgeGdim7the edgeG♯dim7the edgeAdim7the edgeBdim7the edge
A♯dim7 on other instruments
7-string guitar8-string guitarBass5-string bass6-string bass7-string bass8-string bassUkuleleMandolinBanjo