semicord

C# minor the chords in the key

Scale
C# D# E F# G# A B
Key signature
four sharps: F# C# G# D#
Relative major
E major

The seven chords

NumeralChordNotesSound
iC#mC# E G#
ii°D#dimD# F# A
IIIEE G# B
ivF#mF# A C#
vG#mG# B D#
VIAA C# E
VIIBB D# F#

Seventh chords

NumeralChordNotesSound
i7C#m7C# E G# B
iiø7D#m7b5D# F# A C#
IIImaj7Emaj7E G# B D#
iv7F#m7F# A C# E
v7G#m7G# B D# F#
VImaj7Amaj7A C# E G#
VII7B7B D# F# A

V and V7: the raised-seventh V most songs use

From the harmonic minor scale: the seventh note raised a semitone, B to B#.

NumeralChordNotesSound
VG# (same notes, spelled Ab on its chord page)G# B# D#
V7G#7 (same notes, spelled Ab7 on its chord page)G# B# D# F#

Common progressions in C# minor

On guitar

Capo 4. With a capo on fret 4, play the open shapes Am for C#m, Dm for F#m, E for G#: they sound as the i, iv and V (C#m, F#m and G#). The VI chord, A, does not become an open shape at that fret.

How the chords of C# minor work

C# minor uses the notes C# D# E F# G# A B, four sharps: F# C# G# D#: the natural minor scale, the same notes as E major, its relative major. Its chords from the scale are i C#m, ii° D#dim, III E, iv F#m, v G#m, VI A, VII B.

In practice most songs in C# minor play G# or G#7 as the V chord instead of G#m: raising B to B# gives a note a semitone below C# that pulls back to it. That raised seventh comes from the harmonic minor scale (C# D# E F# G# A B#). So a song with both B and G# in it is still in C# minor, and the finder counts G# and G#7 as belonging to this key.

Have a list of chords and not sure of the key? The key finder scores it against all 24 keys and can transpose it.

What this page cannot do

  • Only major and minor keys. Dorian, Mixolydian and the other modes are not covered: a song in D Mixolydian (D, C, G) uses the chords of G major and will look like G major here.
  • Finding a key from chord names is a best fit, not a certainty. A chord list cannot tell a key from its relative major, which shares every chord; the melody and where the song comes to rest decide it.
  • Songs change key. A bridge or a last chorus a step higher is a new key, with its own page.
  • The sound is a simple synthesised tone made in your browser, each chord in root position, not a recorded piano or guitar.