What is the I–I7–IV–IV7 progression?
Classic Motown color with dominant 7ths. Smooth and groovy.
Songs that use this
- What'd I Say · Ray Charles
- Blue Suede Shoes · Carl Perkins
- Shake Rattle and Roll · Big Joe Turner
Why it works
These chords outline strong tonic, dominant, and relative minor colors in D 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-C7-F-F7D major → D-D7-G-G7E major → E-E7-A-A7F major → F-F7-Bb-Bb7G major → G-G7-C-C7A major → A-A7-D-D7B major → B-B7-E-E7