The C♯ Minor 7♯5 chord is a four-note chord made up of C♯, E, G♯♯, and B.
Construction
C♯ Minor 7♯5 = Root + Minor 3rd + Minor 6th + Minor 7th = C♯ · E · G♯♯ · B
| Note | Interval | Degree |
|---|---|---|
| C♯ | Root | 1 |
| E | Minor 3rd | ♭3 |
| G♯♯ | Minor 6th | ♯5 |
| B | Minor 7th | ♭7 |
Key Signature
A chord has no key signature of its own, but the C♯ Minor 7♯5 is the tonic (i) chord of C# Minor, which shares the signature of its relative major, E Major — 4 sharps (F♯, C♯, G♯, D♯).
F♯C♯G♯D♯
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.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of C♯ Minor
These are the triads built on each degree of the C♯ minor scale:
Same Notes, Other Names
The notes C♯ – E – G♯♯ – B aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:
C♯ Minor 7♯5 — Frequently Asked Questions
What is the C♯ Minor 7♯5 chord on piano?
The C♯ Minor 7♯5 chord contains the notes C♯ – E – G♯♯ – B. On piano, play these notes together to sound the chord.