A song released in 2022 has six credited writers, and three of them are Swedish musicians who were never in the room. This unit is about why they are on the list, and about the two different ways of making music out of music that already exists.
Don't answer yet. We come back to these at the end.
Before playing any song all the way through, we sing. Twice, and with no instruments.
First, the class sings the chorus of Please Mr. Postman, The Marvelettes, 1961. Four long notes and a step down. Two run-throughs and it sticks.
Then, with that tune still warm, we sing the chorus of Feel It Still, 2017. Same line. The words are different, the chords underneath are different, the band is different, and the melody is the one from 1961.
Now the second fragment, and this one is whistled. The tune of Young Folks, Peter Bjorn and John, 2006: it fits inside one octave and moves to neighbouring notes. Anyone who cannot whistle in tune plays it on a recorder. Once it works, whistle the theme of I Ain't Worried, 2022. Same thing again.
That is the work done. Now both songs, all the way through, with nobody talking over them.
What you have just done — taking a piece of somebody's music and putting it somewhere else — is as old as music. What changed in the seventies is that people started doing it with recordings instead of scores.
On 11 August 1973, in a rec room at 1520 Sedgwick Avenue in the Bronx, a DJ called Kool Herc put two copies of the same record on two turntables. When the section arrived where the instruments drop out and only percussion is left — that is the break — he jumped to the second copy and played it again. Fifteen seconds became five minutes.
Nobody composed anything that night: a fragment was chosen and stretched. Choosing rather than inventing is the working method that runs all the way to here.
What changes in the ear is this: you start hearing two eras at once. A 1969 record keeps its hiss, its room and its way of sounding, and all of that travels whole into a song made now. It is not a quotation, it is the object itself. The smallest unit you build with stops being the note and becomes the piece of recording.
Once that fitted inside a machine, it got cheap. The E-mu SP-1200 arrived in 1987 with ten seconds of memory. The Akai MPC60 followed in December 1988, designed by Roger Linn, with thirteen seconds and a price of five thousand dollars. Thirteen seconds for a whole song forces you to choose the fragment very well. The photograph at the top shows the sixteen pads of one of those machines: one recorded fragment per square.
Here is the distinction this unit is named after. A sample means using the recording: the physical sound of the old record goes into the new song. An interpolation means playing the melody again: not one second of the old record is used, but the tune is the same one.
This is not a fine point, because a song has two separate owners. One owns the recording, usually the label. The other owns the composition — melody and lyrics — and that is the writers and their publisher. A sample needs permission from both. An interpolation needs it only from the second.
For a few years none of this was asked for. On 17 December 1991, a New York judge named Kevin Thomas Duffy decided Gilbert O'Sullivan's case against Biz Markie, who had used "Alone Again (Naturally)" without clearance. The ruling opens with three words: "Thou shalt not steal." From that day samples get negotiated before release, and replaying the melody becomes the cheap way out.
That is why both songs in this unit are interpolations and not samples. Nobody copied the Marvelettes' record for Feel It Still: John Gourley sang that melody from memory. Even so, three of the five 1961 writers — Robert Bateman, Freddie Gorman and Brian Holland — are among the ten names on the 2017 song.
I Ain't Worried works the same way: six writers, three of them the Swedes Peter Morén, Björn Yttling and John Eriksson, who never set foot in the studio.
My own view, and I will say it plainly: the credit list explains this better than any definition. It is a public statement of who has to be paid. If you want to know what one song took from another, don't read the encyclopedia entry — look at who gets the cheque.
Hard facts: the break stretched with two turntables, 1973. SP-1200, 1987, ten seconds. MPC60, December 1988, thirteen seconds, five thousand dollars. The 1991 ruling: samples get cleared before release. Feel It Still, 2017: ten writers, three of them from 1961. I Ain't Worried, 2022: six writers, three of them from 2006.

Foto: Motown/Tamla Records, James Kriegsmann (Nueva York), dominio público, vía Wikimedia Commons

Foto: Davinic, CC BY-SA 3.0, vía Wikimedia Commons
Reusing somebody else's material was not invented by hip hop, and it does not always need a machine. These three are worth hearing back to back:
None is better than the others. All three do the same job: take something that already existed and build on top. The only thing that changes from case to case is who has to sign.
Late, and it is worth saying so. Hip hop is born in the Bronx in 1973; the first rap record released in Spain is a compilation called Madrid Hip Hop, from 1989. Sixteen years apart. Ariola put out another one the same year, Rapin' Madrid. Neither sold much, but between them they left a working scene in Madrid.
The record that actually founds Spanish rap arrives in 1994: Madrid Zona Bruta, by Club de los Poetas Violentos (CPV). It sold around two thousand copies, which at the time was a lot, and it turned a hobby into a job.
And in Zaragoza, in 1997, Violadores del Verso come together: Kase.O, Lírico and Sho-Hai on vocals, and R de Rumba — Rubén Cuevas — as DJ and producer. That fourth figure is the one this unit is about: the person who hunts down the records, picks the fragments and builds the tracks out of jazz and funk.
They release an EP in 1998, Genios in 1999, Vicios y Virtudes in 2001 and Vivir para contarlo in November 2006, mostly on the Zaragoza label Rap Solo.
The most interesting move comes later, and it runs this unit backwards. In 2011 Kase.O puts together Jazz Magnetism, a group with live musicians: Hugo Astudillo on saxophone, Juan Pablo Balcázar on bass, Dani Comas on guitar and Dani Domínguez on drums. Instead of lifting the jazz off a record, they play it. That is the step from sample to interpolation, made in Zaragoza, with no judge involved.
The songs in this unit are in the library, each with its own article, full-band chart and tab: Feel It Still, I Ain't Worried.
The first song of the unit — Feel It Still, Portugal. The Man (2017). Its article, with the full-band chart and the tab, is in the library.
Where its melody comes from — Please Mr. Postman, The Marvelettes (1961).
The second song of the unit — I Ain't Worried, OneRepublic (2022). It also has its article in the library, with chart and tab.
Where its whistle comes from — Young Folks, Peter Bjorn and John (2006).
A backing played, not sampled — Rapper's Delight, Sugarhill Gang (1979). What you hear underneath is "Good Times" played again by session musicians.
The original — Good Times, Chic (1979). Nile Rodgers and Bernard Edwards ended up credited on the song above.
The borrowed melody of the fifteenth century — L'homme armé, by the Oxford Camerata. This is the tune that over forty masses come from.
The same melody inside a mass — Kyrie from Josquin's Missa L'homme armé super voces musicales, by The Tallis Scholars.
One backing for five hundred songs — Under Mi Sleng Teng, Wayne Smith (1985).
Jazz played instead of sampled — Kase.O Jazz Magnetism at The Furious Sessions. A note for the teacher: the lyrics are adult, so watch it first.
No las respondas todavía. Al final de la unidad volvemos a ellas.
Antes de poner ninguna canción entera, cantamos. Dos veces, y sin instrumentos.
Primero, la clase canta el estribillo de Please Mr. Postman, de The Marvelettes, 1961. Son cuatro notas largas y una bajada. Se aprende en dos vueltas.
Después, con esa melodía todavía caliente, cantamos el estribillo de Feel It Still, de 2017. Es la misma línea. Cambia el idioma de la letra, cambian los acordes de debajo, cambia el grupo, y la melodía es la de 1961.
Ahora el segundo fragmento, y este se silba. La melodía de Young Folks, de Peter Bjorn and John, 2006: cabe en una octava y se mueve por notas vecinas. El que no silbe afinado la toca con la flauta. Cuando salga, silbad el tema de I Ain't Worried, de 2022. Otra vez lo mismo.
Con eso ya está hecho el trabajo. Ahora sí, las dos canciones enteras y sin comentar por encima.
Lo que acabas de hacer —coger un trozo de música de otro y ponerlo en otro sitio— es tan viejo como la música. Lo que cambió en los setenta es que empezó a hacerse con grabaciones, no con partituras.
El 11 de agosto de 1973, en una sala de fiestas del 1520 de Sedgwick Avenue, en el Bronx, un DJ llamado Kool Herc puso dos copias del mismo disco en dos platos. Cuando llegaba el trozo en el que se callan los instrumentos y solo queda la percusión —eso es el break—, saltaba a la segunda copia y lo repetía. Un trozo de quince segundos se convertía en cinco minutos.
Nadie compuso nada aquella noche: se eligió un fragmento y se alargó. Esa manera de trabajar, elegir antes que inventar, es la que llega hasta aquí.
Lo que cambia en el oído es esto: empiezas a escuchar dos épocas a la vez. Un disco de 1969 conserva su ruido, su reverberación y su manera de sonar, y todo eso viaja entero dentro de una canción de ahora. No es una cita, es el objeto. La unidad mínima con la que se compone deja de ser la nota y pasa a ser el trozo de grabación.
Cuando eso se pudo meter en una máquina, se abarató. La E-mu SP-1200 salió en 1987 con diez segundos de memoria. La Akai MPC60 llegó en diciembre de 1988, diseñada por Roger Linn, con trece segundos y un precio de cinco mil dólares. Trece segundos para una canción entera obliga a elegir muy bien el trozo. Lo que la foto de arriba muestra son los dieciséis pads de una de esas máquinas: cada cuadrado, un fragmento.
Y aquí aparece la distinción que da nombre a esta unidad. Un sample es usar la grabación: el sonido físico del disco original entra en la canción nueva. Una interpolación es volver a tocar la melodía: no entra ni un segundo del disco viejo, pero la melodía es la misma.
La diferencia no es de matiz, porque en una canción hay dos dueños distintos. Uno es el dueño de la grabación, normalmente la discográfica. El otro es el dueño de la composición —la melodía y la letra—, que son los autores y su editorial. El sample necesita permiso de los dos. La interpolación, solo del segundo.
Durante unos años esto se hizo sin pedir permiso a nadie. El 17 de diciembre de 1991, un juez de Nueva York llamado Kevin Thomas Duffy resolvió el caso de Gilbert O'Sullivan contra Biz Markie, que había usado su «Alone Again (Naturally)» sin autorización. La sentencia empieza con tres palabras: «No robarás». Desde ese día los samples se negocian antes de publicar, y volver a tocar la melodía se convierte en la salida barata.
Por eso las dos canciones de esta unidad son interpolaciones y no samples. En Feel It Still nadie copió el disco de las Marvelettes: John Gourley cantó esa melodía de memoria. Y aun así, tres de los cinco autores de 1961 —Robert Bateman, Freddie Gorman y Brian Holland— están entre los diez firmantes de 2017.
En I Ain't Worried pasa lo mismo: seis autores, y tres son los suecos Peter Morén, Björn Yttling y John Eriksson, que nunca pisaron el estudio.
Mi opinión, y aquí me mojo: el crédito de autoría explica esto mejor que cualquier definición. Es una lista pública de a quién hay que pagar. Si quieres saber qué se llevó una canción de otra, no mires la Wikipedia: mira quién cobra.
Datos duros: break alargado con dos platos, 1973. SP-1200, 1987, diez segundos. MPC60, diciembre de 1988, trece segundos, cinco mil dólares. Sentencia de 1991: los samples pasan a negociarse antes. Feel It Still, 2017: diez autores, tres de 1961. I Ain't Worried, 2022: seis autores, tres de 2006.

Foto: Motown/Tamla Records, James Kriegsmann (Nueva York), dominio público, vía Wikimedia Commons

Foto: Davinic, CC BY-SA 3.0, vía Wikimedia Commons
Reutilizar material ajeno no lo inventó el hip hop, y no siempre se hace con una máquina. Estos tres conviene oírlos seguidos:
Ninguno es mejor que otro. Los tres hacen lo mismo: coger algo que ya existía y construir encima. Lo único que cambia de un caso a otro es quién tiene que firmar.
Tarde, y conviene decirlo. El hip hop nace en el Bronx en 1973; el primer disco de rap publicado en España es un recopilatorio titulado Madrid Hip Hop, de 1989. Dieciséis años de diferencia. Ese mismo año Ariola sacó otro, Rapin' Madrid. Ninguno de los dos vendió gran cosa, pero dejaron una escena montada en Madrid.
El disco que de verdad funda el rap español llega en 1994: Madrid Zona Bruta, del Club de los Poetas Violentos (CPV). Vendió unas dos mil copias, que en aquel momento era mucho, y convirtió una afición en un oficio.
Y en Zaragoza, en 1997, se juntan Violadores del Verso: Kase.O, Lírico y Sho-Hai a las voces, y R de Rumba —Rubén Cuevas— como DJ y productor. Esa cuarta figura es la de esta unidad: el que busca los discos, elige los fragmentos y monta las bases, escarbando en jazz y en funk.
Publican un EP en 1998, Genios en 1999, Vicios y Virtudes en 2001 y Vivir para contarlo en noviembre de 2006, casi todo en el sello zaragozano Rap Solo.
El movimiento más interesante viene después, y es el de esta unidad al revés. En 2011 Kase.O monta Jazz Magnetism, un grupo con músicos en directo: Hugo Astudillo al saxo, Juan Pablo Balcázar al bajo, Dani Comas a la guitarra y Dani Domínguez a la batería. En vez de sacar el jazz de un disco, lo tocan. Es exactamente el paso del sample a la interpolación, hecho en Zaragoza y sin ningún juez de por medio.
Las canciones de esta unidad están en la biblioteca, cada una con su artículo, su chart de banda y su tablatura: Feel It Still, I Ain't Worried.
La primera canción de la unidad — Feel It Still, Portugal. The Man (2017). El artículo, con su chart de banda y su tablatura, está en la biblioteca.
De dónde sale su melodía — Please Mr. Postman, The Marvelettes (1961).
La segunda canción de la unidad — I Ain't Worried, OneRepublic (2022). También tiene su artículo en la biblioteca, con chart y tablatura.
De dónde sale su silbido — Young Folks, Peter Bjorn and John (2006).
La base tocada, no sampleada — Rapper's Delight, Sugarhill Gang (1979). Lo que suena debajo es «Good Times» vuelta a tocar por músicos de estudio.
El original — Good Times, Chic (1979). Nile Rodgers y Bernard Edwards acabaron firmando la canción de arriba.
La melodía prestada del siglo XV — L'homme armé, por el Oxford Camerata. Es la canción de la que salen más de cuarenta misas.
La misma melodía dentro de una misa — Kyrie de la Missa L'homme armé super voces musicales de Josquin, por The Tallis Scholars.
Una base para quinientas canciones — Under Mi Sleng Teng, Wayne Smith (1985).
El jazz tocado en vez de sampleado — Kase.O Jazz Magnetism en The Furious Sessions. Para el profesor: la letra es de adulto, conviene verla antes.
Don't answer yet. We come back to these at the end.
Before playing any song all the way through, we sing. Twice, and with no instruments.
First, the class sings the chorus of Please Mr. Postman, The Marvelettes, 1961. Four long notes and a step down. Two run-throughs and it sticks.
Then, with that tune still warm, we sing the chorus of Feel It Still, 2017. Same line. The words are different, the chords underneath are different, the band is different, and the melody is the one from 1961.
Now the second fragment, and this one is whistled. The tune of Young Folks, Peter Bjorn and John, 2006: it fits inside one octave and moves to neighbouring notes. Anyone who cannot whistle in tune plays it on a recorder. Once it works, whistle the theme of I Ain't Worried, 2022. Same thing again.
That is the work done. Now both songs, all the way through, with nobody talking over them.
What you have just done — taking a piece of somebody's music and putting it somewhere else — is as old as music. What changed in the seventies is that people started doing it with recordings instead of scores.
On 11 August 1973, in a rec room at 1520 Sedgwick Avenue in the Bronx, a DJ called Kool Herc put two copies of the same record on two turntables. When the section arrived where the instruments drop out and only percussion is left — that is the break — he jumped to the second copy and played it again. Fifteen seconds became five minutes.
Nobody composed anything that night: a fragment was chosen and stretched. Choosing rather than inventing is the working method that runs all the way to here.
What changes in the ear is this: you start hearing two eras at once. A 1969 record keeps its hiss, its room and its way of sounding, and all of that travels whole into a song made now. It is not a quotation, it is the object itself. The smallest unit you build with stops being the note and becomes the piece of recording.
Once that fitted inside a machine, it got cheap. The E-mu SP-1200 arrived in 1987 with ten seconds of memory. The Akai MPC60 followed in December 1988, designed by Roger Linn, with thirteen seconds and a price of five thousand dollars. Thirteen seconds for a whole song forces you to choose the fragment very well. The photograph at the top shows the sixteen pads of one of those machines: one recorded fragment per square.
Here is the distinction this unit is named after. A sample means using the recording: the physical sound of the old record goes into the new song. An interpolation means playing the melody again: not one second of the old record is used, but the tune is the same one.
This is not a fine point, because a song has two separate owners. One owns the recording, usually the label. The other owns the composition — melody and lyrics — and that is the writers and their publisher. A sample needs permission from both. An interpolation needs it only from the second.
For a few years none of this was asked for. On 17 December 1991, a New York judge named Kevin Thomas Duffy decided Gilbert O'Sullivan's case against Biz Markie, who had used "Alone Again (Naturally)" without clearance. The ruling opens with three words: "Thou shalt not steal." From that day samples get negotiated before release, and replaying the melody becomes the cheap way out.
That is why both songs in this unit are interpolations and not samples. Nobody copied the Marvelettes' record for Feel It Still: John Gourley sang that melody from memory. Even so, three of the five 1961 writers — Robert Bateman, Freddie Gorman and Brian Holland — are among the ten names on the 2017 song.
I Ain't Worried works the same way: six writers, three of them the Swedes Peter Morén, Björn Yttling and John Eriksson, who never set foot in the studio.
My own view, and I will say it plainly: the credit list explains this better than any definition. It is a public statement of who has to be paid. If you want to know what one song took from another, don't read the encyclopedia entry — look at who gets the cheque.
Hard facts: the break stretched with two turntables, 1973. SP-1200, 1987, ten seconds. MPC60, December 1988, thirteen seconds, five thousand dollars. The 1991 ruling: samples get cleared before release. Feel It Still, 2017: ten writers, three of them from 1961. I Ain't Worried, 2022: six writers, three of them from 2006.

Foto: Motown/Tamla Records, James Kriegsmann (Nueva York), dominio público, vía Wikimedia Commons

Foto: Davinic, CC BY-SA 3.0, vía Wikimedia Commons
Reusing somebody else's material was not invented by hip hop, and it does not always need a machine. These three are worth hearing back to back:
None is better than the others. All three do the same job: take something that already existed and build on top. The only thing that changes from case to case is who has to sign.
Late, and it is worth saying so. Hip hop is born in the Bronx in 1973; the first rap record released in Spain is a compilation called Madrid Hip Hop, from 1989. Sixteen years apart. Ariola put out another one the same year, Rapin' Madrid. Neither sold much, but between them they left a working scene in Madrid.
The record that actually founds Spanish rap arrives in 1994: Madrid Zona Bruta, by Club de los Poetas Violentos (CPV). It sold around two thousand copies, which at the time was a lot, and it turned a hobby into a job.
And in Zaragoza, in 1997, Violadores del Verso come together: Kase.O, Lírico and Sho-Hai on vocals, and R de Rumba — Rubén Cuevas — as DJ and producer. That fourth figure is the one this unit is about: the person who hunts down the records, picks the fragments and builds the tracks out of jazz and funk.
They release an EP in 1998, Genios in 1999, Vicios y Virtudes in 2001 and Vivir para contarlo in November 2006, mostly on the Zaragoza label Rap Solo.
The most interesting move comes later, and it runs this unit backwards. In 2011 Kase.O puts together Jazz Magnetism, a group with live musicians: Hugo Astudillo on saxophone, Juan Pablo Balcázar on bass, Dani Comas on guitar and Dani Domínguez on drums. Instead of lifting the jazz off a record, they play it. That is the step from sample to interpolation, made in Zaragoza, with no judge involved.
The songs in this unit are in the library, each with its own article, full-band chart and tab: Feel It Still, I Ain't Worried.
The first song of the unit — Feel It Still, Portugal. The Man (2017). Its article, with the full-band chart and the tab, is in the library.
Where its melody comes from — Please Mr. Postman, The Marvelettes (1961).
The second song of the unit — I Ain't Worried, OneRepublic (2022). It also has its article in the library, with chart and tab.
Where its whistle comes from — Young Folks, Peter Bjorn and John (2006).
A backing played, not sampled — Rapper's Delight, Sugarhill Gang (1979). What you hear underneath is "Good Times" played again by session musicians.
The original — Good Times, Chic (1979). Nile Rodgers and Bernard Edwards ended up credited on the song above.
The borrowed melody of the fifteenth century — L'homme armé, by the Oxford Camerata. This is the tune that over forty masses come from.
The same melody inside a mass — Kyrie from Josquin's Missa L'homme armé super voces musicales, by The Tallis Scholars.
One backing for five hundred songs — Under Mi Sleng Teng, Wayne Smith (1985).
Jazz played instead of sampled — Kase.O Jazz Magnetism at The Furious Sessions. A note for the teacher: the lyrics are adult, so watch it first.