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B augmented major 7th chord on ukulele (BaugMaj7)
Also called or written BaugMaj7, BaugM7, B+M7, BM7#5, Bmaj+7, B augmented major seventh or B major seventh sharp five
B augmented major 7th contains B, D♯, F♯♯, and A♯. The single voicing uses three fingers on the same fret and demands precise finger placement.
BaugM7/D♯ inversionfrom fret 2
How it is built
Formula 1, 3, ♯5, 7
- Root positionB–D♯–F♯♯–A♯BaugMaj7no shape on this instrument
- First inversionD♯–F♯♯–A♯–BBaugMaj7/D♯3-3-3-2
- Second inversionF♯♯–A♯–B–D♯BaugMaj7/F♯♯no shape on this instrument
- Third inversionA♯–B–D♯–F♯♯BaugMaj7/A♯3-3-3-2
How do you play a B augmented major 7th chord on ukulele?
B augmented major 7th is played at the 2nd fret as 3 3 3 2: middle finger on the G string at fret 3, ring finger on the C string at fret 3, pinky finger on the E string at fret 3 and index finger on the A string at fret 2.
Full note and interval breakdown
| String | Fret | Finger | Note |
|---|---|---|---|
| 4 (G) | 3 | 2 | A♯ (7) |
| 3 (C) | 3 | 3 | D♯ (3) |
| 2 (E) | 3 | 4 | F♯♯ (♯5) |
| 1 (A) | 2 | 1 | B (1) |
AdvancedThree fingers must share fret 3 on adjacent strings, requiring vertical finger placement to avoid muting.
Why it sounds like that
B augmented major 7th is built from 1, 3, ♯5, and 7. The augmented 5th F♯♯ gives the chord its bright, tense quality. Compared to B major 7th, only the fifth is raised a semitone.
What goes wrong with B augmented major 7th?
- The middle finger leans onto the 3rd string, muting it.
- The pinky does not press hard enough on the 2nd string, causing fret 3 to buzz.
When to use it
B augmented major 7th works as a passing chord in B major progressions, such as B–E–F♯, the I–IV–V in B major. B augmented major 7th suits jazz and cinematic textures where the raised fifth adds tension. Try B augmented major 7th before B major or B major 7th.
Changing to and from B augmented major 7th
- Slide the shape down one fret to the 1st fret to reach B♭ augmented major 7th.
Which voicing to use
The BaugM7/A♯ inversion places A♯ in the bass for a more dissonant, leading-tone sound. This is the only voicing shown, so use it when you need that bass note.
Other B chords
Common questions
How is B augmented major 7th written?
B augmented major 7th is written B+M7, M7#5, maj+7, or BaugM7.
What is the difference between B augmented major 7th and B major 7th?
B augmented major 7th has a raised fifth, F♯♯, while B major 7th has F♯. The raised fifth creates a more dissonant, tense sound.
Why does B augmented major 7th have no tritone?
B augmented major 7th contains no tritone because the interval between D♯ and A♯ is a perfect fifth, not a diminished fifth.