How to Play Your First 12-Bar Blues
Mark Mannering Barton - Pick to Play Guitar
The 12-bar blues is one of the most useful musical forms a beginner can learn. It appears in blues, early rock and roll, country and many songs influenced by them. Once you recognise the structure, you begin to hear it everywhere.
You do not need a guitar solo or complicated shuffle to start. Three chords, twelve counted bars and a steady pulse are enough to make a complete piece of music.
What does “12-bar” mean?
A bar is a group of beats. In this exercise, each bar contains four beats, counted “one, two, three, four”. The progression lasts for twelve bars before returning to the beginning.
Write the numbers 1 to 12 on paper. This simple map is more useful than trying to remember a long chain of chord names. You will place one chord in each numbered bar and play four beats before moving to the next.
Use three seventh chords in E
For a blues in the key of E, use E7, A7 and B7. These are commonly called the one, four and five chords because of their relationship within the key. You can learn the theory later; for now, treat them as the three sounds in your map.
If B7 is new or difficult, practise it separately before attempting the whole form. You can also use a simplified teacher-approved shape while your hand develops. The aim is to keep the music moving, not prove that every chord must be mastered at once.
Learn the bar-by-bar map
The basic version is:
Bars 1–4: E7, E7, E7, E7.
Bars 5–6: A7, A7.
Bars 7–8: E7, E7.
Bar 9: B7.
Bar 10: A7.
Bars 11–12: E7, B7.
The B7 in the final bar creates a pull back to E7 when the pattern repeats. This is often called a turnaround. For an easier first version, stay on E7 in bar 12, then add B7 when the rest feels settled.
Count before you strum
Point to each bar on your written map and count four beats aloud. Move to the next box after “four”. Do this once without the guitar.
It may feel unnecessarily basic, but many early problems come from losing the position in the form rather than playing the wrong chord shape. Counting gives you a route back into the music.
Start with one downstroke per beat
Play E7 with four steady downstrokes: one, two, three, four. Continue for four bars, which means sixteen downstrokes in total, before changing to A7.
Keep the strumming hand moving evenly. Do not add a complicated pattern yet. A clear beat and a correct place in the form will sound more musical than a clever rhythm that stops at every chord change.
Use a metronome at a comfortable speed if it helps, perhaps 60 beats per minute. If that creates pressure, tap your foot and count aloud first.
Prepare changes before the new bar
Your fretting hand can begin to think about the next chord during beat four. Do not leave the current chord too early, but look at the upcoming box and relax the fingers ready to move.
If a change is late, keep counting. Join the new chord on beat two or three rather than stopping the whole progression. Learning to recover inside the form is a valuable musical skill.
Practise the two most important pairs separately: E7 to A7, then B7 to A7. Make each pair slow and even before placing it back into the twelve bars.
Hear the three sections
The progression becomes easier to remember when you hear it in three four-bar phrases. The first establishes E7. The second moves away to A7 and returns. The third creates tension with B7 and leads back to the start.
Say those functions in plain language: home; away and home; turnaround. This is more musical than memorising twelve disconnected boxes.
Add a simple shuffle feel later
Straight downstrokes are a perfectly good starting point. When the form is reliable, you can explore a shuffle, where the beat has a long-short movement rather than being divided evenly.
Do not force the feel by speeding up. Listen to a slow blues example and say “long-short, long-short” while tapping. Then apply it to one E7 chord before taking it through the full progression. Rhythm should be added as a layer, not allowed to dismantle the structure you have built.
Try a no-chord-change version
If the full progression is too much, mute the strings lightly with your fretting hand and strum the twelve bars as a rhythm exercise. Count each bar and make the turnaround slightly louder.
Next, play only the first beat of each bar with the correct chord. Then add four beats per bar. Breaking the task down lets you learn the map, rhythm and chord changes without demanding them all at once.
Use a backing track carefully
A slow 12-bar blues backing track can make the exercise feel like real music, but choose one that clearly states the key and tempo. Listen through once while following your bar map before playing.
If you become lost, stop strumming but keep counting. Listen for the move to A7 in bar five or the B7 sound in bar nine, then rejoin. The backing track should develop listening and recovery, not become something you chase.
Record one complete chorus
A single pass through the twelve bars is often called a chorus. Record one or two choruses on your phone. Listen for the steady beat, the correct number of bars and whether chord changes interrupt the flow.
Choose one thing for the next attempt. Perhaps the B7 arrives late, or the tempo speeds up in the final four bars. A short recording gives you specific information without turning practice into a performance test.
Where to go next
Once the basic progression is comfortable, you can add a stronger shuffle, a bass-note pattern, a different turnaround or a simple pentatonic phrase. You can also move the same one-four-five idea to another key.
The important achievement is understanding a complete form. You are no longer practising isolated chords; you are following a musical journey that other players can recognise and join.
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