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New Released in April 2026

F Sharp Augmented Chord on Piano (F#aug)

F sharp augmented (F#aug) is spelled F# - A# - C##: root, major 3rd and augmented 5th. Its sound is floating, unresolved, so it rarely stays long before moving on. Here is where F#aug comes from, where it resolves and how to play it with both hands.

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  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
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F#aug F# A# C##

What makes F#aug different

One key changes and the chord changes family.

ChordNotesThirdFifth
F# F# A# C#major 3rdperfect 5th
F#m F# A C#minor 3rdperfect 5th
F#dim F# A Cminor 3rddiminished 5th
F#aug F# A# C##major 3rdaugmented 5th

Where F#aug goes

  • F#aug is the III+ chord in the harmonic minor scale of D# minor.
  • Its thirds are equal, so F#aug, Bbaug and Daug use the same three keys: the root is whichever note you treat as home.
  • A common move is F# → F#aug → B: the raised fifth C## pushes up to D#.

B · F#

How to play F#aug on the piano

Thumb, middle and little finger in the right hand: 1-3-5.

F#aug F# A# C##

Root position: F# A# C##

F#aug A# C## F#

1st inversion: A# C## F#

F#aug C## F# A#

2nd inversion: C## F# A#

  • Root position: starts on F#, a black key; black keys: F#, A#
  • 1st inversion: starts on A#, a black key; black keys: A#, F#
  • 2nd inversion: starts on C##, a white key; black keys: F#, A#
ChordRunner showing a chord block while hands play the piano

Train F#aug in a game

ChordRunner mixes F#aug with the chords around it and checks every note you play. MIDI keyboard or microphone, both work.

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All piano chords · Augmented chords explained

Common questions

How do you play F#aug on the piano?

Press F#, A#, C## together: right hand 1-3-5 with the thumb on F#, left hand 5-3-1 with the little finger on F#.

What is the difference between F#aug and F#?

One note. F# has C# on top; F#aug moves it to C##. The new fifth is what gives F#aug its floating, unresolved sound.

Where does F#aug go?

F#aug is the III+ chord in the harmonic minor scale of D# minor. Its thirds are equal, so F#aug, Bbaug and Daug use the same three keys: the root is whichever note you treat as home.

Can I practise F#aug with a MIDI keyboard or microphone?

Yes. ChordRunner detects a USB MIDI keyboard automatically and also hears an acoustic piano through the microphone. F#aug counts in any position, as long as F#, A#, C## sound together.

Your instrument is the controller.

ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.

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