Theory
It's the third step of the density ramp. Yesterday you walked with root-5th (half notes); today you finally step in quarter notes, one note per beat, hitting all four chord tones R-3-5-b7. Quarter-note walking is the real stride of jazz walking bass. It's the moment the skeleton gets flesh and the line starts striding.
Four notes fit in one measure, so the rhythm seems faster, but the rule is the same as yesterday — beat 1 is the root, and on beats 2, 3, 4 you lay the 3rd, 5th, b7 in order. The 3rd in particular is the note that sets whether the chord is major or minor, so it's the most audible color in the arpeggio. Once you land firmly on the beat-1 root, just connect the other three notes evenly.
The spots you'll step today are ones you fully learned last week. For F7, R (4th string, 1st fret) - 3 (4th string, 5th fret) - 5 (3rd string, 3rd fret) - b7 (3rd string, 6th fret); for Bb7, the same hand shape moved one string up. You're not memorizing new positions — you're practicing putting four known spots on a quarter-note rhythm.
First, take F7's four chord-tone spots back into your eyes.
▶ 4-string. The four blue dots are F7's R-3-5-b7. Today you step these four spots in quarter notes.
▶ 5-string. The positions are the same as on a 4-string. Rest your hand over the low B.
Even on a 5-string, the four spots are exactly the same as on a 4-string. Cover the low B again today and focus only on connecting the four notes as even quarter notes. The positions are already in your hands, so today's task is nothing but rhythmic evenness.
See it
Now walk the chord tones in quarter notes. First the F7 arpeggio, then the Bb7 arpeggio, checked by ear. The two chords are the same hand shape with only the position moved, so the feel carries straight over. Every example comes in both a 4-string and a 5-string version.
▶ BPM 76, 4-string. F7's R-3-5-b7, one per beat. Land on the beat-1 root, then climb evenly.
▶ BPM 76, 5-string. Same notes and positions as the 4-string. Rest your hand over the low B.
Next is the Bb7 arpeggio. Step the same R-3-5-b7 from the spot where the F7 shape moved one string up.
▶ BPM 76, 4-string. Bb7's R (3rd string, 1st fret) - 3 - 5 - b7. The hand shape is identical to F7.
▶ BPM 76, 5-string. Same notes and positions as the 4-string. Rest your hand over the low B.
Today's practice
0–10 min · Warm-up Walk yesterday's R-5 line once at BPM 72. Bring the beat-1 root landing back to your fingertips.
10–20 min · Brain training Check F7's four chord-tone spots with your fingertips, and with the prep example below, learn the arpeggio slowly going up and coming back down. Re-engrave the positions into your hands.
▶ BPM 72, 4-string. Measure 1 goes up, measure 2 comes down. Going up and down, cement the four spots in your hand.
▶ BPM 72, 5-string. Same notes and positions as the 4-string. Rest your hand over the low B.
20–40 min · Real play (today's product) Repeat the F7 arpeggio and the Bb7 arpeggio above alternately at BPM 76. The goal is for all four quarter notes to connect at the same, even length. Learn it on a 4-string, then confirm on a 5-string.
40–50 min · Record/feedback Record 30 seconds and listen for whether the spacing of the four notes is even. If one note runs late or early, repeat just that beat slowly on its own.
Done when: you can walk the F7 and Bb7 chord-tone arpeggios (R-3-5-b7) evenly in swing quarters at BPM 76, on both a 4-string and a 5-string.
- You speed up toward the end. R-3 stays clean, then it's easy to rush 5-b7. The four beats must be as evenly spaced as if measured with a ruler.
▶ 4-string. C7 is the same hand shape — R (3rd string, 3rd fret) - 3 - 5 - b7. If you have room, step the C7 arpeggio in quarter notes too.
▶ 5-string. The positions are the same as on a 4-string. Drop to the low B to try a lower octave too.
- You cut the b7 short. The final b7 must also ring fully into the next beat for the measure to feel complete. Don't lift your finger in a hurry.
- You let the 3rd slip. The 3rd is the note that sets the chord's color. Pluck it clearly so it isn't buried under the other notes.
- Neglecting the 5-string low B. If you brush B while focused on the four notes, the low end leaks. Always keep the unused B covered.