The piano keyboard below contains the notes of the B-flat mixolydian mode. This step shows the mode note names that will be used to construct all 7th chords that harmonize with those mode notes. The half-diminished symbol ' ø' is placed after the roman numerals to indicate this is a half-diminished 7th chord.Ĭhord names for B-flat mixolydian chord 3 Chord positionĭ half-diminished 7th chord in root positionĭ half-diminished 7th chord in 1st inversionĭ half-diminished 7th chord in 2nd inversionĭ half-diminished 7th chord in 3rd inversion Just like a minor chord, the half-diminished 7th chord is constructed using a minor third interval, so the roman numeral is shown in lower case.

The roman numeral for number 3 is ' iii', and is used to indicate this is the 3rd chord in the mode. This mediant 7th chords root / starting note is the 3rd note (or scale degree) of the B-flat mixolydian mode. The B-flat mixolydian chord iii ø 7 is the D half-dim7 chord, and contains the notes D, F, Ab, and C. This step shows the mediant 7th chord of the B-flat mixolydian mode.

B flat mixolydian scale major scale