How to play A#dim: a diminished built on A#, with 1 voicing, the notes, the keys it belongs to, and songs that use it.
The first diagram is a common voicing: played at the first few frets. An X above a string means don't play it; an O means play it open.
Frets from the low E string to the high E string: x 1 2 3 2 x (x = not played).
| Note | A# | C# | E |
|---|---|---|---|
| Interval | R | b3 | b5 |
A#dim is a diminished with A# as its root. The full theoretical spelling is A#, C#, E. This voicing sounds every chord tone.
A#dim is a diatonic chord (built from the key's own notes) in 1 major key and 4 minor keys. The roman numeral is the chord's place in that key; tap a key for all of its chords.
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A#dim is spelled A#, C#, E: the root, minor 3rd, flat 5th. The common guitar voicing sounds every one of them.
Frets from the low E string to the high E string: x 1 2 3 2 x (x means the string is not played). Fret the A string at the 1st fret. Add the D and B strings at the 2nd fret. Add the G string at the 3rd fret. Strum from the A string down, skipping the high E string; the low E string stays silent.
A#dim belongs to 5 keys: B major (the vii° chord), G# minor (the ii°), F minor (the iv°, from the harmonic minor), D minor (the vi°, from the harmonic minor) and B minor (the vii°, from the harmonic minor).
