2406 / 18210 · Workshop 5 — 12-Bar Jazz Blues: From Three Chords to a Full Improvisational Language← prev⊞ allnext →
5.4Basic chord notes
C7:
C E G B♭
F7:
F A C E♭
G7:
G B D F
Notice each is a dominant-seventh chord.
That is unusual compared with ordinary major-key harmony.