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B♯m(maj7) Chord: Guitar, Piano and Notes

The B♯m(maj7) chord is a minor major seventh chord built on the root note B♯. Its notes are B♯, D♯, F𝄪 and A𝄪. It's enharmonically the same chord as Cm(maj7).

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Short answer

Minor major seventh chords are unsettling in a beautiful way. A major seventh over a minor triad creates a sharp, unresolved edge best known from spy themes, Hitchcock scores and the darker corners of jazz.

Notes
B♯ · D♯ · F𝄪 · A𝄪
Formula
1 · ♭3 · 5 · 7
Semitones
0 · 3 · 7 · 11
Note
B♯
Quality
Minor Major 7
Symbol
B♯m(maj7)

B♯m(maj7) on piano

4 notes
View:
Piano diagram of the B♯m(maj7) chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

To play B♯m(maj7) on piano, place your right hand with your thumb on B♯, index finger on D♯, middle finger on F𝄪 and little finger on A𝄪. Press the keys together and listen for an even sound. On the keyboard D♯ is a black key and B♯, F𝄪 and A𝄪 are white, the keys you'd normally call C, G and B. Practice moving in and out of the chord slowly, then bring in a metronome.

  • B♯1
  • D♯♭3
  • F𝄪5
  • A𝄪7

B♯m(maj7) on guitar

View:
Guitar chord diagram of the B♯m(maj7) chord

Switch to the interactive diagram to hear the chord, change voicing and swap finger numbers for note names.

On guitar, B♯m(maj7) is commonly played with the voicing shown above. The fretted notes sit between frets 1 and 3. Strings 3 and 2 ring open. Don't play string 6.

B♯ · D♯ · F𝄪 · A𝄪

Play B♯m(maj7) on the online piano

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B♯m(maj7) chord notes

Also known as Cm(maj7)

DegreeIntervalSemitonesNoteHear
1Root0B♯(B#)
♭3Minor third3D♯(D#)
5Perfect fifth7F𝄪(F##)
7Major seventh11A𝄪(A##)

How to use the B♯m(maj7) chord

The B♯m(maj7) chord is built from a root, a minor third, a perfect fifth and a major seventh. Start at the root B♯ and stack the intervals to get the whole chord: B♯, D♯, F𝄪 and A𝄪. The same formula gives you the chord in any other key.

Minor major seventh chords appear in line cliches, where the top voice of a minor chord walks down from the root through the major seventh. James Bond themes, bossa nova and minor-key jazz ballads are where you meet them.

How B♯m(maj7) differs from similar chords

B♯m(maj7) combines the minor third of B♯m with the major seventh of B♯maj7. Its seventh sits a half step higher than in B♯m7, right under the root, and that is where its tense, cinematic edge comes from. It usually passes by in a line cliché between B♯m and B♯m7.

Where B♯m(maj7) is used

No progression is shown for this spelling

Every key B♯m(maj7) would have a function in has a tonic that needs a double accidental, which is not a key this library teaches. The enharmonic spelling carries the same chord in a key that exists.

Questions people ask

What notes are in the B♯m(maj7) chord?
The B♯m(maj7) chord contains B♯, D♯, F𝄪 and A𝄪 (B#, D#, F## and A## in plain text).
Is the B♯m(maj7) chord major or minor?
B♯m(maj7) is a minor major seventh chord. Minor major seventh chords are unsettling in a beautiful way. A major seventh over a minor triad creates a sharp, unresolved edge best known from spy themes, Hitchcock scores and the darker corners of jazz.
How do you play B♯m(maj7) on piano?
Place your fingers on B♯, D♯, F𝄪 and A𝄪 and play them together. The root usually goes to the little finger of the left hand, the upper notes to the right. On the keyboard D♯ is a black key and B♯, F𝄪 and A𝄪 are white, the keys you'd normally call C, G and B.
How do you play B♯m(maj7) on guitar?
Use the fingering in the diagram above. The fretted notes sit between frets 1 and 3. Strings 3 and 2 ring open. Don't play string 6.
What is another name for the B♯m(maj7) chord?
B♯m(maj7) is enharmonically equivalent to Cm(maj7). Both chord names describe exactly the same notes, but the spelling depends on the key you are playing in.