x 1 2 0 2 x
A# dim7
A# diminished seventh (dim7)
Notes: A# · C# · E · G
It is a symmetrical chord: its four notes are three semitones apart, so the same shape repeats every 3 frets and works for four chords (same notes, a different root): A# dim7, C# dim7, E dim7 and G dim7.
More common: Bb dim7
Triads
Suspended
Sevenths
Extensions
Drag the file into your recording program (DAW). It plays the guitar's real notes.
Common shapes (3)
6 x 5 6 5 x
x x 8 9 8 9
Other shapes (21)
Showing 12 of 21
x 1 2 0 2 0
6 4 5 0 5 0
x 1 2 0 2 3
x x 8 6 8 0
6 x 5 6 5 0
6 7 5 6 x x
6 4 x 0 5 6
6 4 5 6 x 0
6 7 5 6 x 0
6 4 x 0 5 3
6 4 5 3 x 0
6 7 x 6 8 0
About A# dim7
A# dim7 is built from four notes: A# (root), C# (minor third), E (diminished fifth) and G (diminished seventh). In scale degrees above the root, the formula is 1 – b3 – b5 – bb7. It is a diminished seventh chord: it stacks three minor thirds, sounds very tense and unstable and wants to resolve, typical of jazz and classical music.
On guitar, A# dim7 has 3 common shapes: the A, E and D shapes. These are CAGED system shapes, the basis for playing the same chord anywhere on the neck. There are 21 more voicings sorted by difficulty; use the viewer switches to add inversions and stretches. A# dim7 is also written as Bb dim7: the same chord with the root spelled differently, and it sounds identical. The more common spelling is Bb dim7.