Construction
| Note | Interval | Degree |
|---|---|---|
| F♯ | Root | 1 |
| A♯ | Major 3rd | 3 |
| C♯ | Perfect 5th | 5 |
| E♯ | Major 7th | 7 |
Fingering
| Note | Key color | Right hand | Left hand |
|---|---|---|---|
| F♯ | black | index finger (2) | little finger (5) |
| A♯ | black | middle finger (3) | ring finger (4) |
| C♯ | black | ring finger (4) | middle finger (3) |
| E♯ | white | little finger (5) | index finger (2) |
Right hand: index finger (2) on F♯, middle finger (3) on A♯, ring finger (4) on C♯, little finger (5) on E♯.
Left hand: little finger (5) on F♯, ring finger (4) on A♯, middle finger (3) on C♯, index finger (2) on E♯.
F♯ Major 7th Inversions
- Root positionF♯ – A♯ – C♯ – E♯
- 1st inversion (F♯maj7/A♯)A♯ – C♯ – E♯ – F♯
- 2nd inversion (F♯maj7/C♯)C♯ – E♯ – F♯ – A♯
- 3rd inversion (F♯maj7/E♯)E♯ – F♯ – A♯ – C♯
Key Signature
A chord has no key signature of its own, but the F♯ Major 7th is the tonic (I) chord of F♯ Major, whose key signature has 6 sharps (F♯, C♯, G♯, D♯, A♯, E♯).
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of F♯ Major
These are the triads built on each degree of F♯ Major:
How F♯ Major 7th functions in a key
The same chord takes on a different harmonic role depending on the key it appears in. Here is where F♯ Major 7th sits diatonically across the common keys:
- In F♯ major, F♯ Major 7th is the I chord — the tonic.
- In A♯ minor, F♯ Major 7th is the VI chord — the tonic.
- In C♯ major, F♯ Major 7th is the IV chord — a predominant.
- In D♯ minor, F♯ Major 7th is the III chord — a mediant / color chord.
Scales That Include the F♯ Major 7th
- F# Major (Imaj7)
- Db Major (IVmaj7)
- Bb Minor (♭VImaj7)
- Eb Minor (♭IIImaj7)
- G# Dorian (VII)
- A# Phrygian (VI)
- B Lydian (V)
- C# Mixolydian (IV)
F♯ Major 7th : Frequently Asked Questions
What is the F♯ Major 7th chord on piano?
What is the F# piano chord?
What notes are in the F# Major 7th chord?
How is the F# Major 7th chord used in music?
What is the fingering for F# Major 7th?
What are the inversions of F# Major 7th?
F♯ Major 7th in detail
Exact
Every pitch class is present and nothing outside the chord is added.
| Type | Notes | Semitones | Span | Omissions and additions | Set relation | Fit |
|---|---|---|---|---|---|---|
| Close, root position | F♯3 A♯3 C♯4 E♯4 | 11 | 151 mm | none | identical | |
| Close, first inversion | A♯3 C♯4 E♯4 F♯4 | 8 | 110 mm | none | identical | |
| Close, second inversion | C♯4 E♯4 F♯4 A♯4 | 9 | 124 mm | none | identical | |
| Close, third inversion | E♯4 F♯4 A♯4 C♯5 | 8 | 110 mm | none | identical | |
| Drop 2 | C♯3 F♯3 A♯3 E♯4 | 16 | 220 mm | none | identical | |
| Drop 3 | A♯2 F♯3 C♯4 E♯4 | 19 | 261 mm | none | identical | |
| Drop 2 and 4 | F♯2 C♯3 A♯3 E♯4 | 23 | 316 mm | none | identical |
Reduced
A subset of the pitch classes: the identity is incomplete rather than altered.
| Type | Notes | Semitones | Span | Omissions and additions | Set relation | Fit |
|---|---|---|---|---|---|---|
| Shell, root 7 3 | F♯2 E♯3 A♯3 | 16 | 220 mm | omits C♯ | subset | |
| Guide tones, 3 and 7 | A♯3 E♯4 | 7 | 96 mm | omits F♯ and C♯ | subset | |
| Rootless close | A♯3 C♯4 E♯4 | 7 | 96 mm | omits F♯ | subset |
Spans are measured centre to centre at a 165 mm octave (standard keyboard geometry).
| Position | Bass note | Notes in order | Figured bass | Semitones | Span |
|---|---|---|---|---|---|
| Root position | F♯ | F♯3, A♯3, C♯4, E♯4 | 7 | 11 | 151 mm |
| First inversion: F♯maj7/A♯ | A♯ | A♯3, C♯4, E♯4, F♯4 | 6/5 | 8 | 110 mm |
| Second inversion: F♯maj7/C♯ | C♯ | C♯4, E♯4, F♯4, A♯4 | 4/3 | 9 | 124 mm |
| Third inversion: F♯maj7/E♯ | E♯ | E♯4, F♯4, A♯4, C♯5 | 4/2 | 8 | 110 mm |
One position per chord tone in the bass. Spans are for close position: voiced inversions appear under Voicings.
| Progression | Key | Role | Sequence | Voice leading |
|---|---|---|---|---|
| IV, V, I | D♭ major | IVmaj7 | G♭maj7 to A♭7 to D♭maj7 | F♯maj7 opens the phrase |
| I, IV | D♭ major | IVmaj7 | D♭maj7 to G♭maj7 | 2 tones held from D♭maj7 |
| ♭III, ♭VI, ii, v | E♭ minor | ♭IIImaj7 | G♭maj7 to C♭maj7 to Fm7♭5 to B♭m7 | F♯maj7 opens the phrase |
| i, ♭III | E♭ minor | ♭IIImaj7 | E♭m7 to G♭maj7 | 3 tones held from E♭m7 |
| ii, V, I | G♭ major | Imaj7 | A♭m7 to D♭7 to G♭maj7 | 2 tones held from D♭7 |
| IV, I | G♭ major | Imaj7 | C♭maj7 to G♭maj7 | 2 tones held from C♭maj7 |
| I, vi, ii, V | G♭ major | Imaj7 | G♭maj7 to E♭m7 to A♭m7 to D♭7 | F♯maj7 opens the phrase |
| ♭VI, iv, i, v | B♭ minor | ♭VImaj7 | G♭maj7 to E♭m7 to B♭m7 to Fm7 | F♯maj7 opens the phrase |
| i, ♭VI | B♭ minor | ♭VImaj7 | B♭m7 to G♭maj7 | 3 tones held from B♭m7 |
Root motion, common tones and voice displacement are computed from pitch class sets. Roman numerals follow common practice functional harmony.
Which keys it belongs to
| Key | Roman numeral | Function |
|---|---|---|
| D♭ major | IVmaj7 | Subdominant, away from home |
| E♭ minor | ♭IIImaj7 | Relative-major color |
| G♭ major | Imaj7 | Tonic, home |
| B♭ minor | ♭VImaj7 | Pre-dominant color |
Classification system: common-practice functional harmony.
Change one note
Chords a single note away, and what moving that note does.
| Chord | Change | Formula | Common tones |
|---|---|---|---|
| F♯maj9 | adds G♯ | 1 3 5 7 9 | 4 |
| F♯ | drops E♯ | 1 3 5 | 3 |
| F♯7 | E♯ becomes E | 1 3 5 ♭7 | 3 |
| F♯mMaj7 | A♯ becomes A | 1 ♭3 5 7 | 3 |
| F♯6 | E♯ becomes D♯ | 1 3 5 6 | 3 |
| F♯add9 | E♯ becomes G♯ | 1 3 5 9 | 3 |
| F♯9 | E♯ becomes E, G♯ | 1 3 5 ♭7 9 | 3 |
| F♯m | A♯, E♯ becomes A | 1 ♭3 5 | 2 |
| F♯aug | C♯, E♯ becomes C× | 1 3 ♯5 | 2 |
| F♯sus2 | A♯, E♯ becomes G♯ | 1 2 5 | 2 |
| F♯sus4 | A♯, E♯ becomes B | 1 4 5 | 2 |
| F♯m7 | A♯, E♯ becomes A, E | 1 ♭3 5 ♭7 | 2 |
Frequencies
| Note | MIDI | Frequency |
|---|---|---|
| F♯3 | 54 | 185.00 Hz |
| A♯3 | 58 | 233.08 Hz |
| C♯4 | 61 | 277.18 Hz |
| E♯4 | 65 | 349.23 Hz |
Reference pitch A440, 12-TET, close root position.
Set theory: prime form, Forte number, interval vector
- Absolute pitch class set
- {6, 10, 1, 5}
- Normal order
- [5, 6, 10, 1]
- Prime form
- (0158)
- Forte number
- 4-20
- Interval vector
- <101220>
| Pair | Interval | Semitones | Interval class |
|---|---|---|---|
| F♯ to A♯ | Major third | 4 | 4 |
| F♯ to C♯ | Perfect fifth | 7 | 5 |
| F♯ to E♯ | Major seventh | 11 | 1 |
| A♯ to C♯ | Minor third | 3 | 3 |
| A♯ to E♯ | Perfect fifth | 7 | 5 |
| C♯ to E♯ | Major third | 4 | 4 |
Where these facts come from
Every value on this page is derived from the note formula for a major 7th applied to the root F♯, using standard music theory. Nothing here is hand-entered per chord, so the notes, intervals, inversions and frequencies cannot drift out of agreement with each other. Pitches assume 12-TET at A440.