Twelve bars and three chords: the frame that holds up most of the rock that came after it. It was recorded by a woman who could not read music and was barely paid for it.
Count to twelve, then start again. That is the whole song.
The frame is called the twelve-bar blues, and once you can play it you can play hundreds of other songs. In class you will play it with three chords: G, C and D.
There is a second story underneath. This recording is from 1952. Four years later another singer recorded the same song and sold twenty times more copies. Before the end you will know who got paid.
Los Angeles, August 1952. Johnny Otis runs a rhythm and blues band and has just signed a 25-year-old singer, Willie Mae Thornton, known to everyone as Big Mama. He needs a song for her.
So he calls two nineteen-year-olds, Jerry Leiber and Mike Stoller. They come to his house, listen to her rehearse and leave to write. It took them about twelve minutes. Leiber scribbled the words in pencil in the car, without writing down a single note.

Esquema: Yehuda Lichtenstein Music, CC BY-SA 4.0, vía Wikimedia Commons (recortado)
The next day, 13 August, they recorded it in a Los Angeles studio. The line-up is tiny: voice, electric guitar, double bass and drums. No honking saxophones, no hammering piano, which was the normal sound of rhythm and blues back then.
That is why you hear the guitar so clearly: it has nothing to compete with. It is very nearly the line-up you will be playing with.
Johnny Otis himself sat down at the drums because the hired drummer could not catch the feel. Since he was under contract to another label, he signed the record with a false name: "Kansas City Bill". They cut two takes and released the second.
At the rehearsal Leiber told Thornton how he wanted her to sing it. She answered: "White boy, don't you be tellin' me how to sing the blues."
Thornton could not read music. She had taught herself: harmonica by watching her older brother, drums by watching other people. She left school in third grade, when her mother fell ill.
The record came out in February 1953 and spent seven weeks at number one on the rhythm and blues chart. Peacock, the label, had three pressing plants running to keep up.
Count four beats in a row: that is a bar. Now count twelve bars. You have just gone through the whole song once, and after twelve you go back to one.
Inside those twelve bars there are only three chords, and they always arrive at the same point. Four bars on the first one. Two on the second. Two back on the first. And the last four are the closing move: one on the third chord, one on the second, two on the first.
That frame is the twelve-bar blues, and it is the same in thousands of songs.
In G, which is how you will play it, those three chords are G, C and D. The 1952 record is not in G: it is in E flat, and the same three slots are filled by E flat, A flat and B flat. The frame has not changed; it has only moved up or down in pitch. That is what transposing means.
The swing in the rhythm comes from how the beat is split. Split each beat in two and it sounds square, like a march. Here it is split in three, with the first half longer than the second, which gives you that slightly limping "daaa-da, daaa-da". It is called a shuffle.
The double bass does not walk in a straight line either: it moves with a Latin lilt. When the record came out, Billboard called it "a wild and exciting rhumba blues".
The best part of the record happens during the solo. The guitar plays, and instead of keeping quiet she answers it: she growls, she talks, she laughs over the top. One side proposes, the other replies. That is call and response, and it comes from singing together in a group.
At the end the whole band barks and howls. Her idea.
Hard facts: E flat major, 4/4, 75 BPM, 2:52. Form: the same twelve-bar turn from beginning to end, with a long guitar solo in the middle and barking at the end. The classroom chart transposes it to G and runs faster, at 102 BPM.

Foto: sin acreditar, revista TV Radio Mirror, septiembre de 1956. Dominio público, vía Wikimedia Commons
In the theory and history book — this song illustrates ¿Cómo sabes por dónde vas en una música que oyes por primera vez? and ¿Cómo se guarda algo que solo existe mientras suena?.
The 1952 recording — there were no music videos in 1952. This is the record.
Thornton singing it live, with Buddy Guy on guitar (1970)
The Elvis version (1956) — the one that sold ten million. Compare the rhythm and the words.
Guitar tutorial — Andy Guitar, three chords. It follows the Elvis version.
Ukulele tutorial — TenThumbs Productions. He explains the blues strum, which is the hard part.
Bass tutorial — TrueFire, twelve-bar blues in G. Not this song: the frame itself, in the key you will be playing in.
Drum tutorial — Love To Learn Drums. How to back a twelve-bar blues without losing count.
Vas a tocar esta canción con tres acordes: Sol, Do y Re. Cuando los tengas, tendrás también el armazón de cientos de canciones más.
El armazón se llama blues de doce compases. Cuentas hasta doce y vuelves a empezar. La canción entera es eso, dando vueltas.
Y hay una segunda historia detrás. Esta grabación es de 1952. Cuatro años después otro cantante grabó la misma canción y vendió veinte veces más. Antes del final sabrás quién cobró.
Los Ángeles, agosto de 1952. Johnny Otis dirige una orquesta de rhythm and blues y acaba de fichar a una cantante de 25 años, Willie Mae Thornton, a la que todos llaman Big Mama. Necesita una canción para ella.
Llama a dos chavales de 19 años, Jerry Leiber y Mike Stoller. Van a su casa, la oyen ensayar y se marchan a escribir. Tardaron unos doce minutos. Leiber apuntó la letra a lápiz en el coche, sin una sola nota escrita.

Esquema: Yehuda Lichtenstein Music, CC BY-SA 4.0, vía Wikimedia Commons (recortado)
Al día siguiente, 13 de agosto, la graban en un estudio de Los Ángeles. La plantilla es mínima: voz, guitarra eléctrica, contrabajo y batería. Nada de saxofones ni de piano aporreado, que era lo normal en el rhythm and blues de entonces.
Por eso la guitarra se oye tanto: no tiene con quién competir. Es prácticamente la formación con la que vais a tocar vosotros.
A la batería se sentó el propio Johnny Otis, porque el baterista contratado no cogía el aire. Como tenía contrato con otro sello, firmó el disco con nombre falso: «Kansas City Bill». Hicieron dos tomas y publicaron la segunda.
En el ensayo, Leiber le explicó a Thornton cómo quería que cantase. Ella le contestó: «Chaval blanco, no me digas a mí cómo se canta el blues».
Thornton no sabía leer música. Había aprendido sola: la armónica mirando a su hermano mayor, la batería mirando a otros. Dejó la escuela en tercero, cuando enfermó su madre.
El disco salió en febrero de 1953 y estuvo siete semanas en el número uno de la lista de rhythm and blues. Peacock, el sello, puso tres fábricas a prensar copias para dar abasto.
Cuenta cuatro tiempos seguidos: eso es un compás. Ahora cuenta doce compases. Con eso has recorrido la canción entera una vez, y al llegar al doce se vuelve al uno.
Dentro de esos doce compases solo hay tres acordes, y entran siempre en el mismo sitio. Cuatro compases con el primero. Dos con el segundo. Dos otra vez con el primero. Y los cuatro últimos son el cierre: uno con el tercero, uno con el segundo y dos con el primero.
Esa planta es el blues de doce compases, y es la misma en miles de canciones.
En Sol, que es como lo vais a tocar, esos tres acordes son Sol, Do y Re. El disco de 1952 no está en Sol: está en Mi bemol, y los mismos tres sitios los ocupan Mi bemol, La bemol y Si bemol. La planta no ha cambiado; solo ha subido o bajado de altura. Eso es transportar.
El balanceo del ritmo sale de cómo se parte el tiempo. Si partes cada tiempo en dos, suena cuadrado, como una marcha. Aquí se parte en tres, y la primera mitad dura más que la segunda: de ahí ese «taaa-ta, taaa-ta» que cojea un poco. Se llama shuffle.
El contrabajo tampoco camina recto: se mueve con un aire latino. Cuando salió el disco, la revista Billboard lo describió como «un blues de rumba salvaje y emocionante».
Lo mejor del disco pasa en el solo. La guitarra toca y ella, en vez de callarse, contesta: gruñe, habla, se ríe encima. Uno propone y el otro responde. Se llama pregunta y respuesta, y viene de cantar en grupo.
Al final, la banda entera ladra y aúlla. Esa idea era suya.
Datos duros: Mi bemol mayor, 4/4, 75 BPM, 2:52. Forma: la misma vuelta de doce compases de principio a fin, con un solo de guitarra largo en medio y ladridos al final. En el chart de clase está transportada a Sol y va más rápida, a 102 BPM.

Foto: sin acreditar, revista TV Radio Mirror, septiembre de 1956. Dominio público, vía Wikimedia Commons
En el libro de teoría e historia — esta canción ilustra ¿Cómo sabes por dónde vas en una música que oyes por primera vez? y ¿Cómo se guarda algo que solo existe mientras suena?.
La grabación de 1952 — en 1952 no había videoclips. Esto es el disco.
Ella cantándola en directo, con Buddy Guy a la guitarra (1970)
La versión de Elvis (1956) — la que vendió diez millones. Compara el ritmo y la letra.
Tutorial de guitarra — Andy Guitar, con tres acordes. Va sobre la versión de Elvis.
Tutorial de ukelele — TenThumbs Productions. Explica el rasgueo de blues, que es lo que cuesta.
Tutorial de bajo — TrueFire, blues de doce compases en Sol. No es de esta canción: es de la planta, y en la tonalidad en la que vais a tocar.
Tutorial de batería — Love To Learn Drums. Cómo acompañar un blues de doce compases sin perder la cuenta.
Count to twelve, then start again. That is the whole song.
The frame is called the twelve-bar blues, and once you can play it you can play hundreds of other songs. In class you will play it with three chords: G, C and D.
There is a second story underneath. This recording is from 1952. Four years later another singer recorded the same song and sold twenty times more copies. Before the end you will know who got paid.
Los Angeles, August 1952. Johnny Otis runs a rhythm and blues band and has just signed a 25-year-old singer, Willie Mae Thornton, known to everyone as Big Mama. He needs a song for her.
So he calls two nineteen-year-olds, Jerry Leiber and Mike Stoller. They come to his house, listen to her rehearse and leave to write. It took them about twelve minutes. Leiber scribbled the words in pencil in the car, without writing down a single note.

Esquema: Yehuda Lichtenstein Music, CC BY-SA 4.0, vía Wikimedia Commons (recortado)
The next day, 13 August, they recorded it in a Los Angeles studio. The line-up is tiny: voice, electric guitar, double bass and drums. No honking saxophones, no hammering piano, which was the normal sound of rhythm and blues back then.
That is why you hear the guitar so clearly: it has nothing to compete with. It is very nearly the line-up you will be playing with.
Johnny Otis himself sat down at the drums because the hired drummer could not catch the feel. Since he was under contract to another label, he signed the record with a false name: "Kansas City Bill". They cut two takes and released the second.
At the rehearsal Leiber told Thornton how he wanted her to sing it. She answered: "White boy, don't you be tellin' me how to sing the blues."
Thornton could not read music. She had taught herself: harmonica by watching her older brother, drums by watching other people. She left school in third grade, when her mother fell ill.
The record came out in February 1953 and spent seven weeks at number one on the rhythm and blues chart. Peacock, the label, had three pressing plants running to keep up.
Count four beats in a row: that is a bar. Now count twelve bars. You have just gone through the whole song once, and after twelve you go back to one.
Inside those twelve bars there are only three chords, and they always arrive at the same point. Four bars on the first one. Two on the second. Two back on the first. And the last four are the closing move: one on the third chord, one on the second, two on the first.
That frame is the twelve-bar blues, and it is the same in thousands of songs.
In G, which is how you will play it, those three chords are G, C and D. The 1952 record is not in G: it is in E flat, and the same three slots are filled by E flat, A flat and B flat. The frame has not changed; it has only moved up or down in pitch. That is what transposing means.
The swing in the rhythm comes from how the beat is split. Split each beat in two and it sounds square, like a march. Here it is split in three, with the first half longer than the second, which gives you that slightly limping "daaa-da, daaa-da". It is called a shuffle.
The double bass does not walk in a straight line either: it moves with a Latin lilt. When the record came out, Billboard called it "a wild and exciting rhumba blues".
The best part of the record happens during the solo. The guitar plays, and instead of keeping quiet she answers it: she growls, she talks, she laughs over the top. One side proposes, the other replies. That is call and response, and it comes from singing together in a group.
At the end the whole band barks and howls. Her idea.
Hard facts: E flat major, 4/4, 75 BPM, 2:52. Form: the same twelve-bar turn from beginning to end, with a long guitar solo in the middle and barking at the end. The classroom chart transposes it to G and runs faster, at 102 BPM.

Foto: sin acreditar, revista TV Radio Mirror, septiembre de 1956. Dominio público, vía Wikimedia Commons
In the theory and history book — this song illustrates ¿Cómo sabes por dónde vas en una música que oyes por primera vez? and ¿Cómo se guarda algo que solo existe mientras suena?.
The 1952 recording — there were no music videos in 1952. This is the record.
Thornton singing it live, with Buddy Guy on guitar (1970)
The Elvis version (1956) — the one that sold ten million. Compare the rhythm and the words.
Guitar tutorial — Andy Guitar, three chords. It follows the Elvis version.
Ukulele tutorial — TenThumbs Productions. He explains the blues strum, which is the hard part.
Bass tutorial — TrueFire, twelve-bar blues in G. Not this song: the frame itself, in the key you will be playing in.
Drum tutorial — Love To Learn Drums. How to back a twelve-bar blues without losing count.