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Bass chord companion

A# Diminished Chord

Learn the A# Diminished chord on bass with chord tones, intervals, playable arpeggios, and fretboard maps.

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1A#b3C#b5E

Bass chord tones and arpeggios

Play these tones one at a time to outline the chord. The maps show the complete formula; the numbered exercises give an ascending path, including extensions in their written octave.

Standard four-string bass: E1 – A1 – D2 – G2. String 4 is low E; string 1 is high G. Fingers 1–4 are index through little finger; 0 is open. Use comfortable hand positions and shift where indicated.

Root on E string

A# Diminished complete chord-tone map around string 4, fret 6. Choose individual tones for a bass line.

A# Diminished Root on E string bass chord-tone mapA# Diminished complete chord-tone map around string 4, fret 6. Choose individual tones for a bass line.EADG567891b3b51b3b5

Ascending arpeggio

Follow steps 1–3 below. Keep one hand position.

A# Diminished Root on E string numbered bass arpeggioAscending complete formula: A#1, C#2, E2. Play one numbered note at a time.EADG4567123
StepDegreeNoteString / fretFingerPosition
11A#14 / 63Fret 4
2b3C#23 / 41Fret 4
3b5E23 / 74Fret 4

Root on A string

A# Diminished complete chord-tone map around string 3, fret 1. Choose individual tones for a bass line.

A# Diminished Root on A string bass chord-tone mapA# Diminished complete chord-tone map around string 3, fret 1. Choose individual tones for a bass line.EADG01234b51b3b51

Ascending arpeggio

Follow steps 1–3 below. Keep one hand position.

A# Diminished Root on A string numbered bass arpeggioAscending complete formula: A#1, C#2, E2. Play one numbered note at a time.EADG1234123
StepDegreeNoteString / fretFingerPosition
11A#13 / 11Fret 1
2b3C#23 / 44Fret 1
3b5E22 / 22Fret 1

Full fretboard map

Every A# Diminished Chord chord tone across the neck, with roots highlighted for quick orientation.

Interactive

Frets 0–24. Select a position or tap a note to hear it.

GDAEA#C#EA#C#EA#C#EA#C#EEA#C#EA#C#A#C#EA#C#E123456789101112131415161718192021222324

Progression examples using A# Diminished

Try these progressions to hear the harmony in context. On bass, outline each chord with individual target tones.

Chord Tones

DegreeIntervalNote
1RootA#
b3m3C#
b5d5E

Complete Formula

1 – b3 – b5

Compound degrees retain their names: 9, 11, and 13 are extensions. A voicing may place their pitches in a closer register.

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