F# Major
Key Signature
| Property | Value |
|---|---|
| Tonic | F# |
| Mode | Major |
| Accidentals | 6 sharps |
| Key Signature Notes | F#, C#, G#, D#, A#, E# |
F# major has six sharps and is enharmonically equivalent to Gb major. It is used when a sharp key is preferred over the flat alternative in notation.
Diatonic Chords
The seven diatonic chords of F# Major — each built on a scale degree using only the notes of the key signature:
| Degree | Roman Numeral | Chord Type | Chord |
|---|---|---|---|
| 1 | I | Major | F# Major |
| 2 | ii | Minor | G# Minor |
| 3 | iii | Minor | A# Minor |
| 4 | IV | Major | B Major |
| 5 | V | Major | C# Major |
| 6 | vi | Minor | D# Minor |
| 7 | vii° | Diminished | F Diminished |
Related Keys
- Relative Minor
- D Sharp Minor — shares the same key signature.
- Parallel Minor
- F Sharp Minor — same tonic, different key signature.
See all key relationships on the Circle of Fifths.
Scales in F# Major
Common scales built from the F# tonic:
Transposing Instrument Context
Sharp-key signatures like F# Major are comfortable for open-string instruments (guitar, violin). Bb instruments (trumpet, clarinet, tenor saxophone) read in G# major to sound F# Major. Eb instruments (alto saxophone, Eb clarinet) read in D# major to sound F# Major. Standard guitar tuning (E A D G B E) resonates naturally in F# Major.