Harmonic structure for ukulele

Bb Major Circle (Bb)

I - vi - ii - V7 progression in Bb major with G minor and F7

Formula: I - vi - ii - V7
4 strings (G, C, E, A)Bb Major Circle (Bb)
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4/488 BPM
↓1
&
↓2
↑&
3
↑&
↓4
↑&
Tempo88
Left-hand technique and transitions

Bb major lays a barre on fret 1 across strings 1 and 2 with finger 1, finger 2 on fret 2 of string 3, and finger 3 on fret 3 of string 4. Moving to G minor finger 1 stays anchored on fret 1 of string 1 while fingers 2 and 3 drop onto strings 3 and 2. For C minor lay a half-barre on fret 3 of strings 3, 2, and 1. For F7 place fingers on frets 2, 3, 1, and 3.

How the chords connect in Bb major

The progression

  • This circle goes through Bb, Gm, Cm and F7, which in Bb major are degrees I, vi, ii and V7. At 88 beats per minute, each bar of 4/4 lasts about 2.7 seconds and the whole round about 10.9.

The notes of each chord

  • In Bb you hear Bb, D and F. Gm holds G, Bb and D. In Cm you hear C, Eb and G. F7 holds F, A, C and Eb.

From one chord to the next

  • From Bb to Gm, Bb and D stay, and two hand positions stay put. Gm and Cm keep G in common. Also, one hand position stays put. From Cm to F7, C and Eb stay, and two hand positions stay put.

Back to the start

  • Going back from F7 to Bb, A rises a semitone to Bb and Eb falls a semitone to D. The two chords share F.

The hand

  • Bb takes a barre at fret 1. Gm presses three positions and leaves string 4 open. Cm takes a barre at fret 3. F7 presses four positions and leaves no string open. The highest fret in the circle is fret 3, in Bb. Bb and Cm use a barre.

Key map: Bb

Key signature
2 flats
Scale notes
Bb – C – D – Eb – F – G – A

The 7 chords of the key

  • IBb
  • iiCm
  • iiiDm
  • IVEb
  • VF
  • viGm
  • vii°Adim
Relative key
Gm
Neighbours on the circle of fifths
EbF
Tablature and notation

Bb Major Circle (Bb) circle for ukulele

Bb 3211 · Gm 0231 · Cm 0333 · F7 2313

Show ukulele tab and notation
AECG32111211023132310333333323131313
The tab uses frets 0 to 3.
Frequently asked questions

Questions about this ukulele circle

Why do B flat and G minor connect so easily on ukulele?

Because your first finger stays rooted on fret 1 of string 1 throughout the change, providing a steady anchor.

How do you fret F7 comfortably on ukulele?

Place fingers 2 and 3 on frets 2 and 3 of the lower strings, and fingers 1 and 4 on frets 1 and 3 of the higher strings.

Which playing style highlights the B flat circle?

A 4-string fingerpicking arpeggio brings out the polyphonic depth between closed shapes like B flat and C minor.