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F-sharp Augmented Chord
The F-sharp Augmented Chord is F-sharp, A-sharp, and C-double-sharp. The C-double-sharp is the white key D, so the chord is two black keys and one white key. The intervals are equal, and the sound is open and unresolved.
How to play the F-sharp Augmented Chord on the piano
Let’s go through some charts that will familiarize you with the F-sharp Augmented Chord and how to play it in the various forms you will encounter in pieces of music. First, we’ll look at the fundamental chord and its inversions; then, we’ll explore some more complex voicings.
The F-sharp Augmented Chord in root position
In root position, the notes of the F♯ augmented chord are stacked in thirds with F♯ on the bottom. The appearance on the staff is evenly spaced, as is the feeling of the space in between your fingers while playing.
| F-sharp Augmented Chord in root position | |
|---|---|
| Note Order | F♯ A♯ C𝄪 |
| Left Hand Fingering | 5 3 1 |
| Right Hand Fingering | 1 3 5 |
| Chord Symbol | F♯aug or F♯+ |
The F-sharp Augmented Chord in first inversion
In first inversion, the third of the chord (A♯) becomes the bottom note, and the root (F♯) jumps up to the top.
| F-sharp Augmented Chord in 1st inversion | |
|---|---|
| Note Order | A♯ C𝄪 F♯ |
| Left Hand Fingering | 5 3 1 |
| Right Hand Fingering | 1 3 5 |
| Chord Symbol | F♯+6 or F♯+/A♯ |
The F-sharp Augmented Chord in second inversion
In second inversion, the fifth of the chord (C𝄪) is on the bottom, and the third of the chord (A♯) goes to the top.
| F-sharp Augmented Chord in 2nd inversion | |
|---|---|
| Note Order | C𝄪 F♯ A♯ |
| Left Hand Fingering | 5 3 1 |
| Right Hand Fingering | 1 3 5 |
| Chord Symbol | F♯+6/4 or F♯+/C𝄪 |
F-sharp Augmented Chord theory and function
An augmented chord stacks two major thirds. Because the intervals are equal, no note sounds like a tonic, and the chord has no place to rest. It is a coloring chord, not a home chord: it hangs in the air and asks for a resolution.
The F♯ augmented chord is the raised-fifth dominant (V+) in B major. On the keyboard this is the same chord as G♭ augmented, and the spelling follows the key. The G♭ augmented chord is the mediant (III+) in E♭ minor.
Try playing F♯ and then F♯+ and listen to how the raised top note lifts the sound.
Other chords built on F-sharp
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