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B♭ dominant seventh chord

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

B♭7

Sevenths · 4 notes

Note names

How it is built

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

Inversions

  • B♭7B♭ D F A♭Root position
  • B♭7/DD F A♭ B♭First inversion
  • B♭7/FF A♭ B♭ DSecond inversion
  • B♭7/A♭A♭ B♭ D FThird inversion

Which keys it belongs to

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

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