Theory Tool
Key Explorer
Select any key to see its notes, diatonic chords, and related scales. All chords link directly to the Chord Explorer.
Mode
Diatonic Chords
Every chord that belongs to C major. Click any chord to explore it in the Chord Explorer.
Major
Minor
Dim
Harmonic Functions
I
C — Tonic
Home — stable, restful
ii
Dm — Pre-dominant
Leads toward the Dominant
iii
Em — Tonic
Home — stable, restful
IV
F — Subdominant
Contrast and departure
V
G — Dominant
Tension — wants to resolve to I
vi
Am — Tonic
Home — stable, restful
vii°
Bdim — Dominant
Tension — wants to resolve to I
Scales in C Major
What can you play in C major?
Learn how the diatonic chords combine into the progressions behind thousands of songs.
Chord Progressions Guide →