About the F augmented suspended four chord
F augmented suspended four is used in B♭ Dorian, where its notes spell the i chord. Think of it as an F augmented suspended fourth chord.
Its notes are F, B♭, and C♯. The intervals are a perfect fourth and an augmented fifth.
Inversions
F augmented suspended four (root position)
Notes and intervals
| 1 | F | Root |
|---|---|---|
| 2 | B flat | Perfect 4th |
| 3 | C sharp | Augmented 5th |
Shapes
Chromatic
Circle of Fifths
Keys that use F augmented suspended four
F augmented suspended four is diatonic to these keys, where its notes spell the chord shown.
iB flat Dorian scaleiB flat Phrygian scaleiB flat Natural Minor scaleiB flat Harmonic Minor scaleiB flat Melodic Minor Ascending scaleiB flat Dorian ♭2 scaleiB flat Dorian ♯4 scaleiB flat Phrygian ♭4 scaleiB flat Lydian Diminished scaleiiA flat Major scaleiiA flat Dorian scaleiiA flat Mixolydian scale
Other F chords
Simpler triads
Suspended
F suspended two chordF suspended four chordF seven suspended four chordF nine suspended four chordF thirteen suspended four chord
Sixths and sevenths
F six chordF minor six chordF minor flat six chordF seven chordF major seven chordF minor seven chordF minor seven flat five chordF diminished seven chordF minor major seven chordF major seven flat five chordF major seven sharp five chordF minor major seven flat five chord
Extensions
F nine chordF add nine chordF major nine chordF minor nine chordF eleven chordF thirteen chordF six nine chordF minor add nine chordF major eleven chordF major thirteen chordF minor eleven chordF minor thirteen chordF minor six nine chordF minor major nine chordF minor major eleven chord
Altered
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