C Minor

Chords in the key of

The scale’s notes are numbered from 1 to 7. Roman numerals are used to label the basic triad (1-3-5) chords built on each of those notes.

The notes of the C natural minor scale are:

C – D – E♭ – F – G – A♭ – B♭

Key of C minor

i ii° III iv v VI VII
Cm Ddim E♭ Fm Gm A♭ B♭
C minor D diminished E flat major F minor G minor A flat major B flat major
C - E♭ - G D - F - A♭ E♭ - G - B♭ F - A♭ - C G - B♭ - D A♭ - C - E♭ B♭ - D - F

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That’s the diatonic set. If you stay strictly inside the key, these are your friends. The pattern of naming chords for every minor key is:

Minor, Diminished, Major, Minor, Minor, Major, Major. Numerals in UPPERCASE (III, VI, VII) denote major chords, and numerals in lowercase (i, ii°, iv, v) denote minor chords.

C Minor: Extended Chords

C HARMONIC Minor: RESOLVING + cinematic

C natural/diatonic minor often borrows the 7th note from C harmonic minor; it’s just one semitone higher but creates and resolves tension far better than its diatonic counterpart.

This raises C minor’s B♭ to B, which affects C minor’s III, v, & VII chords:

Borrowing tension: C harmonic minor

III+ V vii°
E♭aug G Bdim
E flat augmented G major B diminished
E♭ - G - B G - B - D B - D - F

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