Chord · F Augmented
Faug Chord
Faug is F, A and C# — unsettled, dreamlike; symmetrical.
Faug on every instrument
The same 3 notes, 6 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What Faug is made of
Faug (F augmented) is built from the notes F, A, C#, with the interval pattern 1, 3, #5.
Stack 1, 3 and #5 on a root of F and you get F, A and C#. That interval recipe is what makes the chord an augmented chord — move the same shape to another root and the character travels with it, which is why Caug sounds like a transposed Faug.
Augmented: Unsettled, dreamlike; symmetrical.
Spelling: the notes above are written the way a score would write them, not simplified to the nearest piano key. That is why this chord is spelled with C♯ rather than its enharmonic equivalent.
Keys that contain Faug
No major or natural-minor key contains all 3 of these notes — this one gets borrowed.
Chords like this one sit outside the diatonic set — they arrive as secondary dominants, borrowed chords or passing harmony. Browse every key to see which progressions pull it in.
Other chords on F
Same root, different colour.
The same augmented shape, moved
The identical interval recipe, built on other roots.
Questions people ask about Faug
- What notes are in the Faug chord?
- Faug is made of F, A and C# — the 1, 3 and #5 degrees of an augmented chord built on F.
- What keys use the Faug chord?
- No major or natural-minor key contains all 3 notes of Faug. Chords like this arrive as borrowed harmony — secondary dominants, harmonic-minor colour, or chromatic passing chords — rather than as one of a key's native chords.
- How do you play Faug on guitar and piano?
- This page shows Faug on guitar, piano, ukulele, bass, mandolin and banjo — 9 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
Learn the theory behind it
Why Faug behaves the way it does — the guides that explain the chord instead of just spelling it.