Jazz lead sheet · Beginner
12-Bar Blues in F
The three-chord blues in F, the key most jam sessions count off first.
- Composer
- Traditional form
- Form
- 12-bar blues
- Key
- F major
- Style
- Blues
- Length
- 12 bars
BluesF major
I7F Mixolydian
IV7B♭ Mixolydian
I7F Mixolydian
I7F Mixolydian
IV7B♭ Mixolydian
IV7B♭ Mixolydian
I7F Mixolydian
I7F Mixolydian
V7C Mixolydian
IV7B♭ Mixolydian
I7F Mixolydian
V7C Mixolydian
For students
What to notice
- Only three chords: F7 (I7), B♭7 (IV7) and C7 (V7). All three are dominant 7ths, which is the sound of the blues.
- The shape is three 4-bar phrases: home, move to the IV and back, then V–IV–I to finish.
- The guide tones hardly move. A (3rd of F7) falls to A♭ (7th of B♭7), and E♭ (7th of F7) falls to D (3rd of B♭7).
Practice plan
Three steps to improvising
- Play roots on beat 1 with the backing loop until you feel the 12 bars roll by.
- Arpeggiate each chord 1–3–5–7, then 7–5–3–1.
- Improvise with the F blues scale, then aim for the 3rd of each chord as it arrives.
For teachers
Using this chart in class
- Project the chart with Play along running and loop one section while students find the guide tones.
- Choose Practice → Name the numerals for a whole-class quiz: students vote, then reveal the explanation.
- Mixed ensemble? Print the worksheet once per transposition: B♭, E♭, F and bass clef parts all line up bar for bar.
- Share a link: the key, instrument and view you choose are saved in the address bar.
Chord changes are common performance versions written out by Music Theory Lessons. No melodies or lyrics are reproduced. Names of songs and composers are used only to identify each tune.