semicord

Bb Mixolydian scale

Notes
Bb C D Eb F G Ab
Formula
1 2 3 4 5 6 b7
Steps
W W H W W H W (W tone, H semitone)
Also called
Bb Mixolydian mode, Bb dominant scale

Seven notes from Bb up to the next Bb. Each note is written with the letter its degree names, one letter each, so the spelling follows the formula.

Bb Mixolydian on the piano

C4D4E4F4G4A4B4C5D5E5F5G5A5B5C#4Eb4F#4Ab4Bb4C#5Eb5F#5Ab5Bb5C4BbCC5DEbFGAbBb

From Bb4 to Bb5, the root in blue-green.

Intervals from Bb

NoteDegreeIntervalSemitones
Bb1root0
C2major second2
D3major third4
Eb4perfect fourth5
F5perfect fifth7
G6major sixth9
Abb7minor seventh10

Bb Mixolydian on the guitar

Standard tuning, high e on top as in tablature, open strings to fret 12. Every dot is a note of the scale; the pattern repeats from fret 12 up.

eBGDAE357912FGAbBbCDEbCDEbFGAbBbGAbBbCDEbFGDEbFGAbBbCDBbCDEbFGAbFGAbBbCDEb

The seven chords of Bb Mixolydian

Every other note of the scale stacked on each note. Numerals are measured against the major scale on Bb, so a b marks a chord root a semitone lower than in major.

NumeralChordNotesSound
IBbBb D F
iiCmC Eb G
iii°DdimD F Ab
IVEbEb G Bb
vFmF Ab C
viGmG Bb D
bVIIAbAb C Eb

Seventh chords

NumeralChordNotesSound
I7Bb7Bb D F Ab
ii7Cm7C Eb G Bb
iiiø7Dm7b5D F Ab C
IVmaj7Ebmaj7Eb G Bb D
v7Fm7F Ab C Eb
vi7Gm7G Bb D F
bVIImaj7Abmaj7Ab C Eb G

Same notes, different home note

Bb Mixolydian uses exactly the same notes as C natural minor, D Locrian, Eb major, F Dorian, G Phrygian and Ab Lydian. What changes is the note the music keeps returning to, and with it which chord sounds like home.

Same notes as the key of Eb major: the chords are the same seven, but with Bb as home.

How Bb Mixolydian is built

Mixolydian is the major scale with a flat 7th: against Bb major, A becomes Ab. It has the same notes as Eb major, played from its 5th note, which is why it fits the dominant seventh chord on its root, Bb7. The major chord a whole tone below the root, Ab, going to Bb is the classic rock and folk Mixolydian move.

Played some notes and not sure which scale they come from? The scale finder listens to the piano, a MIDI keyboard or the microphone and ranks all 180 scales.

What this page cannot do

  • One spelling per scale. the root is spelled the way that needs the fewest sharps and flats.
  • Equal temperament only. Blues and many folk traditions bend notes between these pitches, and Arabic and Turkish maqam scales use quarter tones that a piano cannot play.
  • The guitar diagram shows standard tuning only and does not suggest fingerings; any note can be played in several places.
  • The sound is a simple synthesised tone made in your browser, not a recorded instrument.

Made with AI tools.