A# Major 7th Chord
Jazzy, bright and complex
A#maj7 is most commonly played as a movable barre chord — the easiest shape sits at fret 1 (Bbmaj7 Barre).
A#maj7 - Bbmaj7 Barre
What is a A#maj7 chord?
A major 7th chord stacks the root, major 3rd, perfect 5th and major 7th — root plus all the bright intervals. The interval between the 7th and the root (a half step) creates a dreamy, unresolved color that's softer than the bluesy tension of a dominant 7th. Major 7ths are the signature sound of bossa nova, jazz ballads and dreamy pop verses.
Notes in the chord: A# – D – F – A
Intervals: Root, 3, 5, 7 (measured from the root)
Where A#maj7 fits in a key
A#maj7 appears as the V in D# major, IV in F major, and I in A# major.
Common progressions with A#maj7
I-V-vi-IV — in A# major
A# → F → Gm → D#
I-IV-V — in A# major
A# → D# → F
I-vi-IV-V — in A# major
A# → Gm → D# → F
When to use a major 7th chord
In the key of A# major, A#maj7 is the tonic (I) — the chord progressions here resolve home to. Use major 7ths as the I chord (Imaj7) for a Steely Dan / Ben Folds / bossa-nova feel, or as the IV chord (IVmaj7) for a softer cadence. They appear constantly in jazz standards (e.g. 'Misty', 'Girl from Ipanema') and any pop song reaching for sophistication. Substitute a plain major chord with maj7 to add color without changing the chord's function.
Common substitutions for A#maj7
- •Major 9 — extends with the 9th for even more color
- •Major 6 — replace the 7th with the 6th for a vintage sound (think Beatles)
- •Plain major — drop the 7th for a more grounded, less-jazzy feel
A# Major Scale
Works great over major chords
Lydian Mode
Add color to major chords
Improvisation Basics
Learn to solo over progressions
Practice with Improvisio
Use A#maj7 in a progression and see which scales work best.
Try it in the trainer