A#/B♭ Power Chord
1st FretThe A#5/B♭5 power chord rooted on the A string at the 1st fret. Root, fifth, and octave across three strings — no barre needed. The low E string is muted. A quick, driving entry point for rock contexts.
A#/B♭ Major
1st FretA-shape barre chord rooted on A#/B♭ at the 1st fret of the A string. The most commonly used full voicing. Five strings from A to high e; the low E is muted. Same fingering pattern as the open A chord moved up one fret.
A#/B♭ Major
6th FretE-shape barre chord with the root on the low E string at the 6th fret. Full, resonant six-string voicing — a warmer tone than the 1st-fret barre and more comfortable due to lower string tension higher on the neck.
A#/B♭ Major
3rd FretD-shape barre chord rooted on A#/B♭ at the 3rd fret. A compact mid-neck voicing on the top four strings with a punchy, focused tone — great for mid-range rhythm playing.
A#/B♭ Major
8th Fret (Top)Compact D-shape triad on the top three strings at the 8th fret. Bright and cutting — ideal for high-register chord stabs, triadic playing, and layering over other instruments in a band.
Tips for Playing the A#/B♭ Chord
A# and B♭ are the same note
A# and B♭ are enharmonic equivalents — identical in pitch. Which name you see depends on the key of the song. On guitar, both are played with exactly the same fingerings.
No open string position
A#/B♭ major has no open-string voicing in standard tuning. Every shape requires fretted notes, making it a key chord for developing barre technique beyond open-chord playing.
Power chord first
The B♭5 power chord on the A string (fret 1) is three strings and no barre. Master this before moving on to the full A-shape barre at the same fret.
The A-shape barre at fret 1 is hardest
Barre chords at the 1st fret have the highest string tension on the neck. If it feels difficult, try the same A-shape barre moved to a higher fret first to build finger strength, then come back to fret 1.
Try fret 6 for a warmer tone
The E-shape barre at the 6th fret gives the same chord with a warmer tone and is easier to play due to lower tension. Alternate between both barre shapes for different tonal colours.
Common progressions
In the key of B♭ major: B♭ → F → Gm → E♭ is a very widely used pop and soul progression. In the key of F major, B♭ is the IV chord and pairs naturally with F, C, and Am in progressions like F → C → B♭ → C.
About the A#/B♭ Chord on Guitar
The A#/B♭ major chord — written as B♭ in flat keys (the most common context) and A# in sharp keys — is built from three notes: A#/B♭, D, and F. Like most chords not built on open strings, it has no natural open-string position on standard-tuned guitar. The A-shape barre at the 1st fret is the standard voicing and uses the same fingering pattern as the open A chord moved up one fret — though the first fret's high string tension makes it one of the more demanding barre chord positions. This page covers five practical shapes: a power chord entry point, the standard A-shape barre, a more comfortable E-shape barre at the 6th fret, a compact D-shape mid-neck voicing, and a high-register top-string triad. Every diagram is interactive with real acoustic guitar sound.
- 015 A#/B♭ major chord shapes from beginner to advanced
- 02Interactive diagrams — click Play to hear each chord
- 03Real acoustic guitar sound via audio engine
- 04Power chord, A-shape barre, E-shape barre, and high-register voicings
- 05Difficulty rating on every shape
- 06Free — no sign-up or download needed
Anatomy
Chord Tones
The 3 notes that form the A♯/B♭ Major chord and their role in the major scale.
Every major chord follows this same formula — root, major third, perfect fifth.