Chords in the key of F# major
The key of F# major has seven diatonic chords: F#, G#mG#mG#mG#m, A#mA#mA#mA#m, B, C#, D#mD#mD#mD#m and E#°. As sevenths: F#maj7F#maj7F#maj7F#maj7, G#m7G#m7G#m7G#m7, A#m7A#m7A#m7A#m7, Bmaj7Bmaj7Bmaj7Bmaj7, C#7C#7C#7C#7, D#m7D#m7D#m7D#m7 and E#m7b5. They come from the F# major scale, F#, G#, A#, B, C#, D# and E#, one on each note.
The table shows each chord in two versions: the triad (the three-note chord) and the seventh chord (the same chord with a fourth note, the seventh, that enriches it).
Notes: F# – G# – A# – B – C# – D# – E#| Degree | Triad | Seventh | Function |
|---|---|---|---|
| I | F#F#F#F# | F#maj7F#maj7F#maj7F#maj7 | tonic |
| ii | G#mG#mG#mG#m | G#m7G#m7G#m7G#m7 | subdominant |
| iii | A#mA#mA#mA#m | A#m7A#m7A#m7A#m7 | tonic |
| IV | BBBB | Bmaj7Bmaj7Bmaj7Bmaj7 | subdominant |
| V | C#C#C#C# | C#7C#7C#7C#7 | dominant |
| vi | D#mD#mD#mD#m | D#m7D#m7D#m7D#m7 | tonic |
| vii° | E#° | E#m7b5 | dominant |
The roman numerals mark the chord's position in the scale: I is the first degree, V the fifth. Uppercase = major chord; lowercase = minor; ° = diminished.
Tonic chords stabilize and rest; subdominant chords prepare motion; dominant chords build the tension that asks for resolution.