What is the I–vi–iii–vii° progression?
A darker four-chord progression descending through minor territory.
Why it works
These chords outline strong tonic, dominant, and relative minor colors in C major: easy to sing and easy to remember on ukulele.
Try in other keys
Same Roman numerals; chords transpose with the key.
C major → C-Am-Em-BdimD major → D-Bm-F#m-C#dimE major → E-C#m-G#m-D#dimF major → F-Dm-Am-EdimG major → G-Em-Bm-F#dimA major → A-F#m-C#m-G#dimB major → B-G#m-D#m-A#dim