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A♭ major: scale and chords
The A♭ major scale, its seven chords and the keys that mix with it, with a loop in A♭ major that plays right here. Move it a semitone, then hum over it.
Mika tunes the sub to A♭1, 51.9 Hz, before anyone hums a note.Four chords of A♭ major over drums and bass, 123 BPM.
The A♭ major scale
A♭ B♭ C D♭ E♭ F G
Four flats: A♭ B♭ D♭ E♭; four black keys on a piano (A♭ B♭ D♭ E♭). Whole and half steps: W W H W W W H.
The chord on the fifth degree, E♭7, pulls back to A♭.
In Hz, from the keynote in octave 4: A♭4 415.3 · B♭4 466.2 · C5 523.3 · D♭5 554.4 · E♭5 622.3 · F5 698.5 · G5 784.0
The chords in A♭ major
Tap a chord to hear it.
| Degree | Chord | Notes | Seventh | Bass, Hz |
|---|---|---|---|---|
| I | A♭ C E♭ | A♭maj7 | A♭2 103.8 | |
| ii | B♭ D♭ F | B♭m7 | B♭2 116.5 | |
| iii | C E♭ G | Cm7 | C2 65.4 | |
| IV | D♭ F A♭ | D♭maj7 | D♭2 69.3 | |
| V | E♭ G B♭ | E♭7 | E♭2 77.8 | |
| vi | F A♭ C | Fm7 | F2 87.3 | |
| vii° | G B♭ D♭ | Gm7♭5 | G2 98.0 |
The loop plays I–V–vi–IV: A♭ E♭ Fm D♭.
Keys that mix with A♭ major
On the Camelot wheel A♭ major is 4B (Open Key 9d). Tracks in these keys mix without a clash:
- 4A F minor relative minor, the same seven notes
- 3B D♭ major one step down
- 5B E♭ major one step up
- 6B B♭ major two steps up, the energy boost
Same keynote, the other mode: G♯ minor (1A), three notes apart.
Where A♭ major sits
| Open strings | In A♭ major | Keynote on an open string |
|---|---|---|
| Guitar E A D G B E | 1 of 6 | – |
| Bass E A D G | 1 of 4 | – |
| Violin G D A E | 1 of 4 | – |
| Viola C G D A | 2 of 4 | – |
| Cello C G D A | 2 of 4 | – |
| Ukulele G C E A | 2 of 4 | – |
Choir parts (soprano C4–G5, alto G3–D5, tenor C3–G4, bass F2–D4, where two part-writing guides agree): A♭3–A♭4 fits the alto part; A♭2–A♭3 fits the bass part; no whole A♭-to-A♭ octave fits the soprano or tenor parts. Find your own range.
As a sub or an 808, the keynote is A♭1 at 51.9 Hz, or A♭2 at 103.8 Hz an octave up. Tune an 808 to A♭.
What plays
Drums, an organ bass and a pluck, the Brumm app's own sounds, four bars at 123 BPM, one chord per bar. The arrows move bass and chords a semitone; the drums stay.
Then hum over it
The hum button opens Brumm with a short line in the key over a beat. Hum yours and it becomes an instrument. No account, no upload.
Sources
Scales and chords: Open Music Theory, musictheory.net. Camelot, Open Key: Mixed In Key, Mixgraph. Open strings: Wikipedia. Choir parts: Open Music Theory, Geneseo. Hz: A4 = 440 Hz, ISO 16.
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