Minor 4 in C major
Minor 4 is I · vi · iii · vii°. In C major that is C, Am, Em, Bdim. A darker four-chord progression descending through minor territory. Loop those chords in order. The same pattern works in any major key.
Why it works
In C major this loop is C, Am, Em, Bdim (I · vi · iii · vii°). I is the home chord. vi adds a minor color. Play the chords in order and the pattern is easy to hear on ukulele.
Chords in C major
Jump to each shape used in this loop.
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