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B♭ major: scale and chords
The B♭ major scale, its seven chords and the keys that mix with it, with a loop in B♭ major that plays right here. Move it a semitone, then hum over it.
A semitone up and B♭ major becomes B major. Mika moves bass and chords, never the drums.Four chords of B♭ major over drums and bass, 123 BPM.
The B♭ major scale
B♭ C D E♭ F G A
Two flats: B♭ E♭; two black keys on a piano (B♭ E♭). Whole and half steps: W W H W W W H.
The chord on the fifth degree, F7, pulls back to B♭.
In Hz, from the keynote in octave 4: B♭4 466.2 · C5 523.3 · D5 587.3 · E♭5 622.3 · F5 698.5 · G5 784.0 · A5 880.0
The chords in B♭ major
Tap a chord to hear it.
| Degree | Chord | Notes | Seventh | Bass, Hz |
|---|---|---|---|---|
| I | B♭ D F | B♭maj7 | B♭2 116.5 | |
| ii | C E♭ G | Cm7 | C2 65.4 | |
| iii | D F A | Dm7 | D2 73.4 | |
| IV | E♭ G B♭ | E♭maj7 | E♭2 77.8 | |
| V | F A C | F7 | F2 87.3 | |
| vi | G B♭ D | Gm7 | G2 98.0 | |
| vii° | A C E♭ | Am7♭5 | A2 110.0 |
The loop plays I–V–vi–IV: B♭ F Gm E♭.
Keys that mix with B♭ major
On the Camelot wheel B♭ major is 6B (Open Key 11d). Tracks in these keys mix without a clash:
- 6A G minor relative minor, the same seven notes
- 5B E♭ major one step down
- 7B F major one step up
- 8B C major two steps up, the energy boost
Same keynote, the other mode: B♭ minor (3A), three notes apart.
Where B♭ major sits
| Open strings | In B♭ major | Keynote on an open string |
|---|---|---|
| Guitar E A D G B E | 3 of 6 | – |
| Bass E A D G | 3 of 4 | – |
| Violin G D A E | 3 of 4 | – |
| Viola C G D A | 4 of 4 | – |
| Cello C G D A | 4 of 4 | – |
| Ukulele G C E A | 3 of 4 | – |
Choir parts (soprano C4–G5, alto G3–D5, tenor C3–G4, bass F2–D4, where two part-writing guides agree): B♭3–B♭4 fits the alto part; B♭2–B♭3 fits the bass part; no whole B♭-to-B♭ octave fits the soprano or tenor parts. Find your own range.
As a sub or an 808, the keynote is B♭1 at 58.3 Hz, or B♭2 at 116.5 Hz an octave up. Tune an 808 to B♭.
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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