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Bass Guitar Chord & Arpeggio Guide

A#/Bb Diminished Bass Chord

Master the A#dim chord on 4, 5, and 6-string bass with fretboard diagrams, interactive BPM looper, and TAB.

🎹 Open in Simple Learning

4-String Bass Arpeggio TAB & Notation

G|----------3---|
D|-------2------|
A|-1--4---------|
E|--------------|

Chord Tones & Degree Formula

Chord Tones: A# - C# - E

A# Diminished is the same set of pitches as Bb Diminished; this page spells the notes from A#.

1
A#
Interval: +0st
♭3
C#
Interval: +3st
♭5
E
Interval: +6st

Interactive Fretboard Chart

Filter:

Golden badges mark the root; purple badges show active chord tones.

Nut
1
2
3
4
5
6
7
8
9
10
11
12
G
A#
C#
E
D
E
A#
C#
A
A#
C#
E
E
E
A#
C#
E

Musical Role & Bass Application

Character: Tense, unsettled, and leading.

Bass Application: Passing diminished bass lines, vii° in major keys, and chromatic tension.

All the notes of the A# Diminished chord fit inside Bb Blues, A# Locrian and Bb Diminished Whole-Half; they also fit G# Natural Minor.

See whether every note lands on a real bass in the exact-pitch bass trainer, or practise it over a ready-made line from the MIDI riff packs.

Frequently Asked Questions

What notes are in the A#/Bb Diminished bass chord?

The chord tones of the A# Diminished bass chord are: A# - C# - E. The formula is: 1 - ♭3 - ♭5. A# Diminished is the same set of pitches as Bb Diminished; this page spells the notes from A#.

How do bassists use Diminished chords in basslines?

Tense, unsettled, and leading. Passing diminished bass lines, vii° in major keys, and chromatic tension.

How can I practice this bass chord across 4, 5, and 6 strings?

Toggle between 4-string, 5-string, and 6-string fretboards on this page, or launch Basnote Simple Learning for real-time Web MIDI input and note-role grading.