Guitar chords · Half-diminished 7th
A♯m7♭5 chord on guitar (A#m7b5)
A♯m7♭5 (A♯ A diminished triad with a minor 7th added, written m7♭5 or ø7. It is the ii chord of a minor key. 7th) has four notes: A♯, C♯, E and G♯, the The note a chord is named after and built up from. C is the root of C, Cm and C7., ♭3, ♭5 and ♭7.
Shapes
How to play A♯m7♭5
Strum a shape to hear it, or pick it one string at a time. R marks the The note a chord is named after and built up from. C is the root of C, Cm and C7.; the other numbers are the chord tones.
A♯m7♭5 has no common A chord played near the nut that uses some unfretted strings, such as the open G, C or Em.. Play it as the A shape at The metal strips across the neck, and the spaces between them. Each fret raises a string by one half step. 1 or the E shape at fret 6. A A chord or scale fingering with no open strings. Slide it up or down the neck and it changes its root but not its type: a major shape stays major. keeps its fingering anywhere on the neck: slide it up or down and the The note a chord is named after and built up from. C is the root of C, Cm and C7., on the lowest played string, names the chord.
A shape · fret 1
E shape · fret 6
Notes and formula
What makes A♯m7♭5 half-diminished 7th
A A diminished triad with a minor 7th added, written m7♭5 or ø7. It is the ii chord of a minor key. A triad with one more 3rd on top, the 7th, which makes four notes: G7, Cmaj7 and Am7 are seventh chords. is a A chord with a minor 3rd and a flattened 5th, written °. It sounds tense, and is the vii° chord of a major key. A three-note chord stacked in 3rds: a root, a 3rd and a 5th. Major, minor, diminished and augmented chords are triads. with a minor 7th added, also written ø7. It is the vii chord of a major key with sevenths, and the ii chord of a minor key, where it leads into V in a minor ii–V–i.
- 1Root: the note the chord is named after. Keep it.
- 3Essential: makes the chord what it is. Never drop it.
- 5Optional: drop it first when you run out of fingers.
The ♭3rd, the ♭5th and the ♭7th make A♯m7♭5 a A diminished triad with a minor 7th added, written m7♭5 or ø7. It is the ii chord of a minor key. A triad with one more 3rd on top, the 7th, which makes four notes: G7, Cmaj7 and Am7 are seventh chords..
- A♯Rroot
- C♯♭3essential
- E♭5essential
- G♯♭7essential
- A♯, the root
- Other chord tones
A♯m7♭5 usually leads to D♯7 and then G♯m: the iiø7–V7–i of G♯ minor.
A♯m7♭5 and B♭m7♭5 are the same chord with two names: same The metal strips across the neck, and the spaces between them. Each fret raises a string by one half step., same sound. Which one you see depends on the key the song is written in.
Keys
Keys with A♯m7♭5
A♯m7♭5 belongs to two keys: B major (viiø7) and G♯ minor (iiø7).
Numerals follow the key's own scale, so III, VI and VII in a minor key are its own major chords. A ♭ or ♯ in front marks a chord from outside the key. How Roman numerals work
Progressions
Progressions with A♯m7♭5
Common progressions that use A♯m7♭5, each in a key that spells it A♯m7♭5. The outlined chord is A♯m7♭5.
Minor ii–V–i in G♯ minor
iiø7 – V7 – i7
- A♯m7♭5
- D♯7
- G♯m7
Half-diminished ii, dominant V7 and back to the minor tonic.
Heard in Blue Bossa, Autumn Leaves
Slash chords
A♯m7♭5 over another bass note
A A chord with a different note in the bass, written after a slash: C/E is a C chord with E as its lowest note. The letter after the slash is the bass. keeps A♯m7♭5 on top and puts another note in the bass: the letter after the slash is the lowest note you play.
- A♯m7♭5/C♯
A♯m7♭5 with its ♭3rd, C♯, in the bass: the first inversion.
- A♯m7♭5/E
A♯m7♭5 with its ♭5th, E, in the bass: the second inversion.
- A♯m7♭5/G♯
A♯m7♭5 with its ♭7th, G♯, in the bass: the third inversion.
Same root
Other chords on A♯ / B♭
Change one or two notes and the same The note a chord is named after and built up from. C is the root of C, Cm and C7. gives a different colour. Compare them by ear.
- B♭ major
- B♭m minor
- B♭7 dominant 7th
- B♭maj7 major 7th
- B♭m7 minor 7th
- B♭sus2 suspended 2nd
- B♭sus4 suspended 4th
- B♭6 major 6th
- B♭m6 minor 6th
- B♭add9 add 9
- B♭9 dominant 9th
- B♭maj9 major 9th
- B♭m9 minor 9th
- B♭13 dominant 13th
- B♭maj13 major 13th
- B♭m11 minor 11th
- A♯° diminished
- A♯°7 diminished 7th
- B♭+ augmented
- B♭5 power chord
- B♭7sus4 dominant 7th suspended 4th
- B♭m(maj7) minor major 7th
- B♭6/9 six-nine
- B♭m(add9) minor add 9
- B♭7♯9 dominant 7th sharp 9th
Questions
A♯m7♭5, in short
- What notes are in the A♯m7♭5 chord?
- A♯m7♭5 (A♯ A diminished triad with a minor 7th added, written m7♭5 or ø7. It is the ii chord of a minor key. 7th) has four notes: A♯, C♯, E and G♯, the The note a chord is named after and built up from. C is the root of C, Cm and C7., ♭3, ♭5 and ♭7.
- How do you play A♯m7♭5 on guitar?
- A♯m7♭5 has no common A chord played near the nut that uses some unfretted strings, such as the open G, C or Em.. Play it as the A shape at The metal strips across the neck, and the spaces between them. Each fret raises a string by one half step. 1 or the E shape at fret 6.
- What key is A♯m7♭5 in?
- A♯m7♭5 belongs to two keys: B major (viiø7) and G♯ minor (iiø7).
- Is A♯m7♭5 the same as B♭m7♭5?
- Yes: same frets, same sound, different name. A♯m7♭5 is the spelling in B major and G♯ minor; B♭m7♭5 in C♭ major and A♭ minor, which most players write as B major and G♯ minor.