A# / Bb Chords Directory — Piano Keys & Guitar Voicings

The three most essential chords built on A# are A# Major (A#–D–F), A# Minor (A#–C#–F), and A# Dominant 7th (A#–D–F–G#).

Together with A# Major 7th (A#–D–F–A), these four chords provide the harmonic core for playing thousands of songs across pop, rock, folk, blues, and jazz.

The A# Major chord contains the root (A#), major third (D), and perfect fifth (F).

The A# Minor chord lowers the third by a half-step: root (A#), minor third (C#), and perfect fifth (F). That single semitone change transforms the emotional tone from bright and resolved to dark and melancholic.

A#7 (dominant seventh) pairs a major triad with a minor 7th (A#–D–F–G#), creating bluesy harmonic tension.

A#maj7 (major seventh) pairs a major triad with a major 7th (A#–D–F–A) for a dreamy, lush jazz feel. A#m7 (minor seventh) pairs a minor triad with a minor 7th (A#–C#–F–G#), giving a smooth, soulful sound.

In the key of A# major, A# acts as the tonic (I chord).

Common progressions include I–IV–V (A# – D# – F), I–V–vi–IV (A# – F – Gm – D#), and the jazz ii–V–I (Cm7 – F7 – A#maj7).

On piano, A# chords are played by pressing the constituent notes simultaneously (A#, D, F for major) with your right hand, or playing the root A# in the left hand with chords in the right.

On guitar, A# chords can be fretted using open positions (where applicable) or moveable barre chord shapes rooted on either the 6th string or 5th string.

Suspended chords replace the third with a major second (A#sus2: A#–C–F) or a perfect fourth (A#sus4: A#–D#–F).

Because they lack a third, they are neither major nor minor, creating an open, unresolved harmonic suspension that begs to resolve back to A# major.

Yes! Clicking on any A# chord card below opens an interactive page featuring playable piano keyboards, guitar fretboard fingerings (including open and barre shapes), interval analysis, audio playback, and printable PDF chord sheets.