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B♭ minor seventh chord

The B♭m7 chord (minor seventh) is made of the notes B♭, D♭, F, A♭. Its formula compared with the major scale is 1 ♭3 5 ♭7.

B♭m7

Sevenths · 4 notes

Note names

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How it is built

DegreeNoteInterval from the root
1B♭Unison
♭3D♭Minor third
5FPerfect fifth
♭7A♭Minor seventh

Inversions

  • B♭m7B♭ D♭ F A♭Root position
  • B♭m7/D♭D♭ F A♭ B♭First inversion
  • B♭m7/FF A♭ B♭ D♭Second inversion
  • B♭m7/A♭A♭ B♭ D♭ FThird inversion

Which keys it belongs to

B♭m7 is a diatonic chord, that is, it comes from a degree of the scale, in these keys:

Frequently asked questions

Which notes make up the B♭m7 chord?
The notes are B♭, D♭, F, A♭.
What is the formula of the B♭m7 chord?
The formula is 1 ♭3 5 ♭7: minor third, perfect fifth, minor seventh.

Texts and tools by , professional musician and developer. Last updated: October 8, 2026.

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