Chord · F# Minor (1st Inversion)
F♯m/♭3 Chord
F♯m/♭3 is A, C# and F# — minor triad with the third in the bass.
F♯m/♭3 on every instrument
The same 3 notes, 1 sets of hands. Open a diagram for alternate shapes, audio and the mistakes to avoid.
What F♯m/♭3 is made of
F# Minor (1st Inversion) (F# minor (1st inversion)) is built from the notes A, C#, F#, with the interval pattern b3, 5, 1. A common minor (1st inversion) chord across many styles.
Stack b3, 5 and 1 on a root of F♯ and you get A, C# and F#. That interval recipe is what makes the chord a minor first inversion chord — move the same shape to another root and the character travels with it, which is why Cm/♭3 sounds like a transposed F♯m/♭3.
Minor (1st Inversion): Minor triad with the third in the bass.
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 F♯m/♭3
All 3 notes sit inside the scale of 6 keys. The roman numeral marks the degree the chord is rooted on.
Other chords on F♯
Same root, different colour.
The same minor first inversion shape, moved
The identical interval recipe, built on other roots.
Questions people ask about F#m/b3
- What notes are in the F#m/b3 chord?
- F#m/b3 is made of A, C# and F# — the b3, 5 and 1 degrees of a minor first inversion chord built on F#.
- What keys use the F#m/b3 chord?
- Every note of F#m/b3 belongs to 6 keys: D Major (iii), A Major (vi), E Major (ii), B Minor (v), F# Minor (i), C# Minor (iv). The roman numeral is the scale degree the chord is rooted on.
- How do you play F#m/b3 on guitar and piano?
- This page shows F#m/b3 on piano — 1 voicings in total. Each diagram links to the full instrument page with alternate shapes, audio and common mistakes.
- Is F#m/b3 the same as Gbm/b3?
- Yes. F#m/b3 and Gbm/b3 are enharmonic — identical pitches written two different ways. Which spelling you use depends on the key you are in; F#m/b3 is the spelling this site treats as canonical.
Learn the theory behind it
Why F♯m/♭3 behaves the way it does — the guides that explain the chord instead of just spelling it.