How to write a blues song: 12 bars, AAB lyrics and the shuffle

To write a blues song, put your words on the 12-bar form: four bars of the I chord, two of IV, two of I, then V, IV, I and V. In the key of A that’s A7, D7 and E7. Each verse has three lines in an AAB pattern: a line that states the trouble, the same line again, and a third line that answers it and rhymes with the first. Sing each line for about two bars and leave the other two for the guitar to answer. Add a shuffle feel, let the melody lean on the minor pentatonic over those major chords, and close every verse with a turnaround that leads back to the top. Then write three verses about one concrete problem.

Below: the form bar by bar with two audio examples (straight and shuffled), the AAB verse explained, call and response, blue notes, turnarounds, minor and 8-bar blues, an original blues lyric example with a template to copy, and loops to sing over in the free chord player.

The 12-bar blues structure, bar by bar

The 12-bar blues is one of the most common chord progressions in popular music, and rock and roll, R&B and jazz all use it. It’s built from three chords, and each four-bar block carries one line of the lyric:

Bars	Chord	In A	In E	Lyric
1–4	I7	A7	E7	Line A, then the answer
5–6	IV7	D7	A7	Line A again
7–8	I7	A7	E7	Answer
9–10	V7, IV7	E7, D7	B7, A7	Line B
11	I7	A7	E7	Answer
12	V7	E7	B7	Turnaround back to the top

All three are usually dominant seventh chords (A7 is A, C♯, E and G). The seventh never quite resolves, and that slightly gritty, unfinished color is the sound of the blues; types of chords explains how sevenths are built. On guitar, A and E are the friendly keys, because every chord has an open shape.

What to listen for: this is a synthesized teaching example, a strummed guitar with rock drums. After the count-in (0:00–0:02), A7 holds for four bars. D7 arrives around 0:11 and the music lifts, A7 comes back around 0:16, then E7 lands around 0:20 as the strongest push, D7 follows at 0:23, A7 at 0:25, and the E7 at 0:27 is the turnaround that would send you back to bar 1. Count the bars out loud along with it: once you can feel bar 9 coming without counting, you know the form. Notice the hi-hat, too: it ticks exactly halfway between the beats. That’s a straight feel, and the second example below changes exactly that.

A common variation is the quick change, also called “quick to four”: go to IV in bar 2 and back to I in bar 3 (A7, D7, A7, A7, D7, D7…). It breaks up the long opening on one chord. Compare them in the player: the standard 12 bars and the quick change. The player also has a “12-bar blues” preset if you’d rather pick a key yourself.

Blues lyrics structure: the AAB verse

A blues verse is three lines over the 12 bars: a line over the first four bars, the same line over the next four, and a concluding line over the last four. Each line has a job:

• Line A states the trouble as a picture, not as a feeling. “My boiler quit” beats “I feel low”.
• Line A again repeats it, often with a small change: a “Yeah,” at the start or one word swapped. The repeat gives the listener time to feel it, and in the improvising tradition it gave the singer time to think of the answer.
• Line B is the answer: the reason, the joke, the twist or the decision. It rhymes with line A on the last word and usually lands harder.

A:  The boiler quit on Monday, and the landlord didn't call
A:  Yeah, the boiler quit on Monday, and the landlord didn't call
B:  I wear two coats in the kitchen, watch my breath crawl up the wall

Four rules that make it work:

1. End line A on a word with rhymes you’d actually say. “Call” opens wall, hall, small, fall; the rhyming dictionary lists more by sound, and how to rhyme in songs covers near rhymes.
2. Make line B new information. If line B only repeats the mood, the verse has no payoff.
3. Keep lines speakable, around 10 to 15 syllables, so you can sing them in two bars without rushing.
4. One verse, one picture. Three verses tell a story: the trouble, it gets worse, a turn.

Call and response: leave room for the guitar

In the blues, the voice and the instrument talk to each other. The singer makes the call for roughly the first two bars of each four-bar line, and the guitar, harmonica or piano answers in the gap with a short phrase, a fill. That call-and-response shape comes from African and African American musical traditions, and it’s why a blues lyric needs fewer words than you think.

Write the gaps into the lyric:

1. End each line early. If the words run into bar 3, cut a word.
2. Mark the answer: write “(guitar)” or “(answer)” at the end of each line, so you remember to leave the space.
3. If you play, answer with two to five notes from the scale in the next section, then stop. If you don’t play, hum the answer, clap it or leave the silence: a band player will fill it later.
4. Record one pass with the answers hummed in the free online voice recorder. Hearing the gaps tells you if the lines are too long.

Blue notes and the minor pentatonic over major chords

The melody of a blues often uses notes that clash with the chords on purpose. The A minor pentatonic scale (A, C, D, E, G) is the classic source, played and sung over major-sounding chords like A7. The C in the scale rubs against the C♯ in the chord, and blues singers and guitarists don’t pick one: they bend or slide the C up toward C♯ and let the note sit in between. That bent, “worried” pitch is a blue note. The flattened third, fifth and seventh are the three classic ones, and adding the flat fifth (E♭ in A) to the minor pentatonic gives you the A blues scale.

What it does over each chord:

Chord	Chord notes	What the A minor pentatonic does
A7	A, C♯, E, G	C clashes with C♯: bend it, that’s the blue third
D7	D, F♯, A, C	C is the chord’s seventh: it sounds at home
E7	E, G♯, B, D	G clashes with G♯: the tension before the turnaround

You don’t need theory to use this. Sing the melody in a small range, about five notes, close to how you’d speak the line. Scoop up into the long notes from just below, and let the third of the key slide instead of hitting it square. The A minor pentatonic page plays the scale, and music scales for songwriting shows how to build a melody from five notes.

The shuffle: the long-short swing of the blues

Many blues songs aren’t played straight but shuffled: each beat is split into three, and the eighth notes go long-short, “daa-da, daa-da”. Write the same 12 bars with a shuffle and the song swings without changing a chord.

What to listen for: the same form, slower and swung, as a synthesized teaching example. After the count-in (0:00–0:02), the low guitar rocks between two shapes in every bar, root and fifth and then root and sixth (A–E, A–F♯ over A7), the classic boogie figure, from 0:02. D7 comes in at 0:12, A7 returns at 0:17, E7 at 0:22, D7 at 0:25, A7 at 0:27, and the E7 at 0:30 is the turnaround. Now listen to the hi-hat: it no longer ticks halfway between the beats but later, on the last third of each beat. Tap your foot and say “one-trip-let, two-trip-let”: the guitar and the hat land on “one” and on “let”. Play this right after the straight example and you’ll hear what the shuffle adds.

To practice it, set the metronome to 6/8 at your song’s tempo: it clicks three times per beat. Sing your long syllable on the first click and the short one on the third, and skip the middle one. That’s the shuffle grid. Then try your song at 70, 96 and 120 BPM: the same words go from heavy to relaxed to driving. What BPM means explains the numbers.

Turnarounds: how each verse leads back to the top

A turnaround is the passage at the end of a section that leads into the next one. In a 12-bar blues it lives in the last bars and ends on the V chord (E7 in A), which pulls the ear back to A7 for the next verse. In the shuffle example you hear it at 0:30.

Three ways to use it in your song:

• Let line B finish by bar 11 and leave bar 12 to the instrument: the singer breathes while the E7 sets up the next verse.
• Start the next line A in bar 12 with a pickup word, “Well,” or “Now,”, so the verse arrives already moving.
• On the last verse, stay on A7 in bar 12 instead of going to E7. Without the V the song stops, and the listener hears the end.

Minor blues and 8-bar blues

Not every blues is 12 bars of major chords. Two forms are worth knowing before you choose:

Form	Chords in A	Feel	Loop it
Minor 12-bar	Am7 ×4, Dm7 ×2, Am7 ×2, F7, E7, Am7, E7	Darker, slow and heavy	Play at 72 BPM
8-bar	A7, E7, D7, D7, A7, E7, A7, E7	Shorter, a ballad or gospel lean	Play at 92 BPM

The minor blues swaps the I and IV chords for minor sevenths and uses ♭VI7 and V7 (F7 and E7 in A minor) in bars 9 and 10. “The Thrill Is Gone”, written by Roy Hawkins and Rick Darnell in 1951 and a hit for B.B. King in 1969, is a well-known slow minor-key blues. The chord player plays a plain F triad instead of F7 in that loop, which is close enough to sing over.

The 8-bar blues goes to the V chord right away, in bar 2. “Key to the Highway” follows the pattern in the table. With only eight bars, the lyric is usually two lines of four bars each, or a line and a short refrain.

Blues themes beyond the clichés

The blues isn’t only sad. Its lyrics have always covered work, travel, money, love gone wrong, and they could be funny and raunchy too. What sinks a new blues is the borrowed phrase: the listener has heard it so often that it carries no picture.

Tired move	Why it fails	Try instead
”Woke up this morning…”	Thousands of songs start there	The exact time and object: “Six fifteen, the kettle’s cold"
"My baby left me”	No detail, no person	What did they leave behind?
Crossroads, the devil, whiskey	Someone else’s Mississippi in the 1930s	Your own crossroads: a bus depot, a job offer, a group chat
”I’ve got the blues”	Names the genre, not the trouble	Name the trouble: the rent, a night shift, a phone at 1%

Humor works especially well. A blues that complains about something small, with a straight face, gets the room on your side. If you’d rather write about real loss, how to write a sad song goes deeper into that tone.

Blues lyrics example: “Cold Kitchen Blues”

Written for this article in A, as a shuffle at 96 BPM, on the standard 12 bars. Chords sit above the words where they change; “(answer)” marks the gap for the guitar.

Verse 1
A7
The boiler quit on Monday, and the landlord didn't call   (answer)
D7                                                A7
Yeah, the boiler quit on Monday, and the landlord didn't call   (answer)
E7                       D7                         A7   E7
I wear two coats in the kitchen, watch my breath crawl up the wall

Verse 2
I left a note on his windshield, wrote it nice and polite   (answer)
Left a note on his windshield, wrote it neat and polite   (answer)
He's sunning down in Florida, and I boil water every night

Solo: one 12-bar verse for the guitar, a harmonica or a hum

Verse 3
Now the neighbors bring their blankets, we play cards by candle flame   (answer)
All the neighbors bring their blankets, we play cards by candle flame   (answer)
The cold got us acquainted, so, landlord, thanks for nothing all the same

Why it works:

• Every verse is a picture you can see: two coats, a note on a windshield, cards by candlelight.
• The second A line always shifts a little (“Yeah”, “nice” turns to “neat”, “Now” turns to “All”), so the repeat feels alive.
• Line B carries the punch and the rhyme: call/wall, polite/night, flame/same.
• The story turns. Verse 3 doesn’t complain more: the cold brings the neighbors together, and the last line is a joke at the landlord’s expense.
• The title names the situation, as many blues titles do, so it doesn’t need to be sung.

Template: write your own blues in 20 minutes

Copy this, fill the blanks and sing it over the loop below.

Title: __________ Blues        Key: A    Tempo: 90–100 BPM, shuffle

The trouble (one concrete thing): __________________

Verse 1 – the trouble
A  (bars 1–4, A7):        ______________________________ (answer)
A  (bars 5–8, D7 → A7):   same line, one word changed ___ (answer)
B  (bars 9–12, E7 → D7 → A7 → E7): the twist, rhymes with A ____

Verse 2 – it gets worse (a new detail, a new rhyme)
Solo – 12 bars, instrument or hum
Verse 3 – the turn (a joke, a decision, a way out)
Last bar: stay on A7 to finish

Steps:

1. Pick the trouble in two minutes. Small and specific beats big and vague.
2. Write line B of verse 1 first, then the line A it answers. The punch decides the setup.
3. Check that line A ends on a word with easy rhymes.
4. Loop the player, sing line A for two bars and hum the answer for two. Adjust the words until they fit.
5. Write verses 2 and 3 the same way, then record a full take.

The player plays straight eighths, not a shuffle. Sing with the long-short swing anyway, or set the metronome to 6/8 next to it. For the whole song, the song structure planner has a 12-bar blues form: intro, verses, a solo verse and an outro, with the running time at your tempo. At 96 BPM each 12-bar verse lasts 30 seconds, so four verses with a short intro and outro come to about 2:20.

Where to listen: three blues traditions

Listen for the form, the gaps and the turnarounds, never to borrow lines. The Delta blues, with Robert Johnson as its best-known name, is one voice and an acoustic guitar, often with a slide. The Chicago blues, associated with Muddy Waters, took that sound electric with a full band. In the 1960s, the British blues boom grew around Alexis Korner, often called the father of British blues, and John Mayall & the Bluesbreakers, whose 1966 album with Eric Clapton is a landmark of the style. Pick one recording, count its bars and mark where the instrument answers the voice. Then write your own words in the same shape. If the blues pulls you toward louder guitars, how to write a rock song picks up where the 12 bars leave off, and how to write a song on guitar covers strumming and first chords.

Common mistakes and how to fix them

• Three lines with the same words. Line B must be new: the answer, not the echo.
• No room for the answer. If you sing through all four bars, cut words until two bars are free.
• Losing your place in the 12 bars. Count out loud with the player, or write the bar numbers above the lyric.
• A lyric made of stock phrases. Swap each one for an object, a time or a place.
• Singing the scale stiffly. Bend and slide the third; the blue note lives between the keys.
• Ending on the turnaround. On the last verse, stay on the I chord so the song finishes.

Where Zoundroom fits: the verses, the answers and every take in one project

Zoundroom doesn’t generate audio, has no virtual instruments or beats, and isn’t where you mix and master the final track; a DAW such as GarageBand or BandLab is. It has no tuner either, so for an open tuning for slide, use the free online tuner on this site. Where it helps is keeping a blues together while it grows from one line into a song. Each song is a project with its recordings, lyrics, notes and files: open a note called “Cold Kitchen Blues”, write the key, the tempo and the three AAB lines, and record the guitar answer or a hummed melody inside the note, so the audio lands at the cursor right after the line it answers. Import the rehearsal take into the same project and share it with whoever plays with you (Free shares with up to 2 artists, Pro with up to 4 and adds timestamped comments, so a bandmate who also has Pro can mark the second where the turnaround drags, and the Band plan covers up to 7 members). It’s the same account on iOS, Android and web, and the web app records in the browser too. Auralis, the app’s assistant, can suggest another way to say line B or a third verse as text, never audio. Your next step: write verse 1 tonight and record it in its note with the answers hummed.

Frequently asked questions

How do you structure blues lyrics?

Use the AAB pattern: a line that states the trouble, the same line again (often with a small change), and a third line that answers it and rhymes with the first. Each line takes four bars of the 12-bar form, with about two bars sung and two left for the instrument.

What chords are in a 12-bar blues?

Three dominant seventh chords: I7, IV7 and V7. In A they’re A7, D7 and E7; in E, E7, A7 and B7. The order is I for four bars, IV for two, I for two, then V, IV, I and V.

How do I write a blues song if I’m a beginner and don’t play guitar?

Loop the 12 bars in the chord player, write one AAB verse about a concrete problem, sing it over the loop and hum the answers in the gaps. Record that take; a guitarist can learn the song from it.

What’s the difference between 12-bar and 8-bar blues?

The 12-bar blues has three lines of four bars each (AAB). The 8-bar blues is shorter and goes to the V chord in bar 2, so it usually carries two lines per verse. Both use the same three chords.

Do blues songs have to be sad?

No. Blues lyrics cover work, money, travel and love, and many are funny. A small trouble sung with a straight face often works better than a big tragedy.

Sources

All pages checked on October 2, 2026.

• Wikipedia, “Twelve-bar blues”: the I–I–I–I / IV–IV / I–I / V–IV–I–V progression, the quick change (IV in bar 2), the minor blues with ♭VI7–V7 and the eight- and sixteen-bar variants. wikipedia.org
• Wikipedia, “Blues”: the AAB lyric over three four-bar lines, call and response rooted in African and African American traditions, blue notes, shuffles and walking bass, humorous and raunchy lyrics, origins in the Deep South around the 1860s, Delta blues (Robert Johnson) and Chicago blues (Muddy Waters). wikipedia.org
• Wikipedia, “Blue note”: flattened third, fifth and seventh; bent or in-between pitches; blues scales used over major-key progressions. wikipedia.org
• Wikipedia, “Shuffle rhythm”: long-short pairs on a triplet basis, linked to blues and boogie-woogie. wikipedia.org
• Wikipedia, “Turnaround (music)”: a passage at the end of a section that leads to the next one; in blues it ends on the V7. wikipedia.org
• Wikipedia, “Eight-bar blues”: the I7–V7–IV7–IV7–I7–V7–I7–V7 pattern of “Key to the Highway” and the move to V in bar 2. wikipedia.org
• Wikipedia, “The Thrill Is Gone”: a slow minor-key blues by Roy Hawkins and Rick Darnell (1951), recorded by B.B. King in 1969. wikipedia.org
• Wikipedia, “British blues”: Alexis Korner as the father of British blues and John Mayall & the Bluesbreakers’ 1966 album with Eric Clapton. wikipedia.org