About the B flat five chord
The B flat five chord is a B flat power chord built from B flat, F. It sits outside the plain diatonic set, so it is borrowed to add color and tension.
It is also written A sharp five , which spells the same notes enharmonically.
Positions
(root position)
Notes and intervals
| 1 | B flat | Root |
| 2 | F | Perfect 5th |
Shapes
Chromatic
Circle of Fifths
Other B flat chords
Simpler triads
Suspended
B flat suspended two B flat suspended four B flat seven suspended four B flat nine suspended four B flat thirteen suspended four
Sixths and sevenths
B flat six B flat minor six B flat minor flat six B flat seven B flat major seven B flat minor seven B flat minor seven flat five B flat diminished seven B flat minor major seven B flat major seven flat five B flat major seven sharp five B flat minor major seven flat five
Extensions
B flat nine B flat add nine B flat major nine B flat minor nine B flat eleven B flat thirteen B flat six nine B flat minor add nine B flat major eleven B flat major thirteen B flat minor eleven B flat minor thirteen B flat minor six nine B flat minor major nine B flat minor major eleven
Altered
Functional relationships
These chords are where this one most naturally comes from and resolves to inside a key.
Dominant
The dominant is a fifth above the root, and it builds tension that pulls strongly back to this chord.
Subdominant
The subdominant is a fourth above the root (a fifth below), and it usually leads on to the dominant or back home.
