About the F sharp augmented suspended four chord
F sharp 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 D. The intervals are a perfect fourth and an augmented fifth.
Also called G flat augmented suspended four, which spells the same notes enharmonically. In shorthand it is commonly written F#augsus4.
Inversions
F sharp augmented suspended four (root position)
Notes and intervals
| 1 | F sharp | Root |
|---|---|---|
| 2 | B | Perfect 4th |
| 3 | D | Augmented 5th |
Shapes
Chromatic
Circle of Fifths
Keys that use F sharp augmented suspended four
F sharp augmented suspended four is diatonic to these keys, where its notes spell the chord shown.
Other F sharp chords
Simpler triads
F sharp five chordF sharp major chordF sharp minor chordF sharp diminished chordF sharp augmented chord
Suspended
F sharp suspended two chordF sharp suspended four chordF sharp seven suspended four chordF sharp nine suspended four chordF sharp thirteen suspended four chord
Sixths and sevenths
F sharp six chordF sharp minor six chordF sharp minor flat six chordF sharp seven chordF sharp major seven chordF sharp minor seven chordF sharp minor seven flat five chordF sharp diminished seven chordF sharp minor major seven chordF sharp major seven flat five chordF sharp major seven sharp five chordF sharp minor major seven flat five chord
Extensions
F sharp nine chordF sharp add nine chordF sharp major nine chordF sharp minor nine chordF sharp eleven chordF sharp thirteen chordF sharp six nine chordF sharp minor add nine chordF sharp major eleven chordF sharp major thirteen chordF sharp minor eleven chordF sharp minor thirteen chordF sharp minor six nine chordF sharp minor major nine chordF sharp minor major eleven chord