Scales & harmony from C

A theory reference for everything built on the tonic C: the diatonic chords of C major and C natural minor, the progressions they form, and the scale types that start from C.

Key relationships at a glance: the relative minor of C major is A minor, and C minor shares its key signature with D# major. Use the tables to compare harmony side by side, then jump to an instrument to hear the shapes under your fingers.