The Melody Web what each genre heard, and what it passed on

heard passed on Click or tap a node to recenter. Use a connecting line, or Influence, for the story.

Heard

African American work song practice · 1700–1960

When labor song moves off the field into juke and street performance, the solo holler meets guitar (and later harmonica) as answering voice.

Influence
Ragtime genre · 1890–1920

The classic / vaudeville wing of blues hears ragtime: published strains, parlor harmony, and a staged song that can sit next to a cakewalk or coon-song sheet.

Influence
Spirituals genre · 1750–

Church and juke shared singers, pentatonic/gapped tunes, and vocal techniques (moan, shout, lining).

Influence

Blues

genre · 1860–

Includes Boogie-woogie, British blues

African American secular song and instrumental practice that crystallized in the late nineteenth-century South: inflected melody over repeating harmonic cycles, personal lyric stance, and a flexible groove. Country, classic (vaudeville), Delta, Texas, Chicago, and later electric styles are regional and historical dialects, not separate parent genres. Jump blues sits on Rhythm and blues. Named children now filed: Boogie-woogie, Jug band, British blues. Ragtime feeds only the published/vaudeville wing. West African and Ring shout hops stay one step back (via work song and spirituals). Sea-shanty and minstrel appropriation are not parents. Direct blues-into-hip-hop sampling stays a leftover bin; the hop is usually via soul, funk, or rock.

Listen

  1. Cross Road Blues Robert Johnson (1936) YouTube · Spotify
  2. St. Louis Blues Bessie Smith · written by W. C. Handy (1925) YouTube · Spotify
  3. Match Box Blues Blind Lemon Jefferson (1927) YouTube · Spotify
  4. Preachin' the Blues Son House (1930) YouTube · Spotify
  5. Sweet Home Chicago Robert Johnson (1936) YouTube · Spotify
  6. I Can't Be Satisfied Muddy Waters (1948) YouTube · Spotify
  7. Boogie Chillen' John Lee Hooker (1948) YouTube · Spotify
  8. Dust My Broom Elmore James (1951) YouTube · Spotify
  9. Hoochie Coochie Man Muddy Waters · written by Willie Dixon (1954) YouTube · Spotify
  10. The Thrill Is Gone B.B. King (1969) YouTube · Spotify · Amazon

Passed on

Bluegrass style · 1946–

Bluegrass takes blues’s bent thirds, blues song, and mandolin blues figures into the acoustic high-lonesome unit.

Influence
Boogie-woogie style · 1920–

Boogie-woogie is blues on an ostinato left hand: same 12-bar (and 8-bar) cycle, same blue inflection, a piano that behaves like a band.

Influence
British beat style · 1963–1966

Beat groups take named blues songs and guitar language into short British singles (Stones, Animals, Yardbirds’ early book).

Influence
British blues style · 1962–

British blues learns the American book from records: Chess and related 12-bar songs, amplified guitar, harp, and a club band that treats blues as the set, not as a rock original.

Influence
Chicago jazz style · 1922–1930

Chicago small-band jazz keeps blues as a chorus form and pitch language on the South Side: 12-bar vehicles, inflected thirds and sevenths, and a cabaret blues book.

Influence
Country genre · 1923–

Commercial country takes blues as a working language from the first national stars: Rodgers’s blue yodels, 12-bar and I–IV–V song, bent thirds, and guitar answering the voice.

Influence
Folk revival movement · 1958–1966

The revival takes country and songster blues as folk repertory: rediscovered players (Hurt, House, James) and younger White guitarists learn the 78s for campus and Newport.

Influence
Gospel genre · 1920–

Modern gospel takes blues piano, inflection, and first-person song into the church: Dorsey writes sacred numbers that still sit in a blues-trained hand.

Influence
Hard bop style · 1954–1965

Hard bop leans into blues after bebop’s first wave: 12-bar heads, blue cadence, a heavier bounce (Silver, Blakey, Adderleys).

Influence
Hard rock style · 1968–

Hard rock is electric blues played as rock spectacle: the same pentatonic boxes, bent thirds and sevenths, call-and-response licks, and 12-bar or I–IV–V cadences, now through stac…

Influence
Heavy metal genre · 1970–

Early metal players have blues hands: pentatonic boxes, bent notes, call-and-response licks, and a guitar-hero role learned from electric blues and hard rock.

Influence
Honky-tonk style · 1941–

Honky-tonk is where country’s blues share becomes the bar default: 12-bar and I–IV–V cycles, bent thirds, and steel or electric guitar answering a crying voice.

Influence
Jazz genre · 1910–

Jazz takes the blues as a harmonic cycle, a pitch language (inflected thirds, fifths, sevenths), and a way of making a personal sound on a repeating form.

Influence
Jug band genre · 1915–1940

The jug band’s songbook is blues: 12-bar and comic blues, AAB, guitar-and-harp language, with a jug as bass.

Influence
New Orleans jazz style · 1890–1930

The first jazz style takes the blues as a local vehicle and pitch language: 12-bar choruses, inflected thirds and sevenths, and a Saturday-night dance job already in Uptown bands…

Influence
Old-time style · 1923–

Early commercial string-band and songster records take blues songs and 12-bar form into the book later called old-time.

Influence
Psychedelic rock style · 1966–1969

A wing of psychedelia keeps blues form and pentatonic guitar and stretches duration, volume, and studio color (Cream, Hendrix, Dead jams on blues changes).

Influence
Rhythm and blues genre · 1940–

R&B is largely blues plus electricity, a dance drummer, and a shorter, louder recorded form.

Influence
Rock genre · 1964–

The 1960s rock umbrella keeps blues as a working language, not a costume: pentatonic boxes, bent thirds and sevenths, 12-bar and I–IV–V cycles, and a shuffle or even-eight groove…

Influence
Rock and roll genre · 1954–1964

Separate from the R&B-industry edge: rock and roll takes specific blues guitar and harmonica licks, boogie bass, and the stance of the electric solo as the song’s face.

Influence
Roots rock style · 1968–

Roots rock uses blues as speech, not as a loud-rock clinic: pentatonic lines, I–IV–V or 12-bar frames, and guitar answering the voice.

Influence
Skiffle genre · 1956–1959

Skiffle’s songbook is blues and songster material (Lead Belly as the usual crate) played on cheap acoustic kit.

Influence
Soul genre · 1958–

Southern soul keeps blues’s twelve-bar rhetoric, bent melody, and small electric band, under a gospel-trained lead.

Influence
Swing style · 1928–1946

Swing bands keep 12-bar blues and riff-chorus blues as a working language beside the 32-bar song.

Influence
Western swing style · 1934–1947

Western swing takes 12-bar blues and blues guitar onto a Texas string-and-horn dance band.

Influence

African American work song → Blues

melodyrhythmphrase and lickperformance practicefunction and contextstrength: highscholarly consensus1860–1920oralmigration

Mechanism

When labor song moves off the field into juke and street performance, the solo holler meets guitar (and later harmonica) as answering voice. Speech-timed rhythm, falling contours, blue inflection, and leader/response texture become the blues’ vocal grammar. The 12-bar harmonic cycle is a later, partly separate crystallization (also fed by popular song); this edge is about vocal-rhythmic procedure, not about inventing I–IV–V.

Evidence

Early country blues recordings still stretch bars like hollers (Johnson, House, Patton). Lyric stance — first-person complaint, travel, work, sexual boast — continues the work-song topics. Palmer’s and Baraka’s histories treat the holler as the immediate parent; Kubik supplies the African-side pitch argument that the holler itself already carried.

Debate

How much Anglo-American ballad and parlor harmony should share parent credit. Van der Merwe stresses shared formulas; blues specialists usually keep the work-song/holler line as the stronger vocal parent.

Mediators

community: Southern songsters and laborers

Ragtime → Blues

form and structureharmonyfunction and contextstrength: mediumwell documented1910–1930notationoralrecording

Mechanism

The classic / vaudeville wing of blues hears ragtime: published strains, parlor harmony, and a staged song that can sit next to a cakewalk or coon-song sheet. Strength medium — country and Delta blues do not need this hop; african american work song blues and spirituals blues remain the rural parents.

Evidence

Handy’s St. Louis Blues and the 1920s classic-blues 78s (Smith and others) whose piano and form sit next to ragtime popular song; Southern on the theatrical circuit.

Debate

Whether to treat Handy as blues or as popular song about blues. This edge is the published/staged wing only. Do not hang ragtime as a parent of the holler.

Mediators

artist: W. C. Handy; community: Vaudeville and classic-blues circuits

Spirituals → Blues

melodyperformance practicephrase and lickstrength: mediumscholarly consensus1865–1930oral

Mechanism

Church and juke shared singers, pentatonic/gapped tunes, and vocal techniques (moan, shout, lining). Spirituals contribute tune types and a habit of stretching syllables that blues secularizes. The influence is mutual in daily life; the arrow records the sacred-to-secular carry that commentators from Baraka to Floyd treat as normal African American practice, not a fall from grace.

Evidence

Overlapping repertories in songsters; “holy blues” recordings; identical cadential licks in church moan and country blues. Strength is medium because work song and popular harmony are equally necessary parents.

Debate

Some church narratives deny the link; music historians do not. Weighting among work song, spiritual, and Anglo-American song remains a matter of emphasis.

Mediators

community: Southern singers moving between church and Saturday night

Blues → Bluegrass

melodyphrase and lickharmonystrength: mediumwell documented1946–1955oralrecording

Mechanism

Bluegrass takes blues’s bent thirds, blues song, and mandolin blues figures into the acoustic high-lonesome unit. Strength medium. blues country and blues old time are earlier umbrella/dialect hops; this is Monroe’s 1946 job. Gospel remains the sacred-set donor.

Evidence

Monroe’s “Mule Skinner Blues” and blues-tinged mandolin breaks; Malone on blues in bluegrass.

Debate

Whether old-time already carried the blues share. The high-speed mandolin-and-trio recoding is bluegrass’s.

Mediators

artist: Bill Monroe

Blues → Boogie-woogie

harmonyform and structuremelodystrength: highscholarly consensus1920–1938oralrecording

Mechanism

Boogie-woogie is blues on an ostinato left hand: same 12-bar (and 8-bar) cycle, same blue inflection, a piano that behaves like a band. Strength high. It is a style of blues, not a second system.

Evidence

Pine Top’s named 1928 side; Ammons, Lewis, Yancey books that are blues choruses; Palmer and Grove on barrelhouse as blues piano.

Debate

How much the left hand owes to ragtime or march. Those are later incoming edges on the boogie node; they do not erase this parent.

Mediators

artist: Pine Top Smith

Blues → British beat

harmonymelodyphrase and lickstrength: mediumscholarly consensus1962–1966recordingoral

Mechanism

Beat groups take named blues songs and guitar language into short British singles (Stones, Animals, Yardbirds’ early book). Strength medium. rhythm and blues british beat is the broader Black-pop hop; this file is the 12-bar and Chess-repertory share. The dedicated club scene is British blues.

Evidence

Early Stones and Animals 45s that are blues covers; Yardbirds’ blues club origin.

Debate

How to split beat, R&B, and British blues. Three files: R&B for the dance-band pop; this edge for blues songs inside beat; blues british blues for Mayall’s named scene.

Mediators

artist: The Rolling Stones; artist: The Animals

Blues → British blues

harmonymelodyphrase and lickinstrumentationstrength: highscholarly consensus1962–1968recordingoral

Mechanism

British blues learns the American book from records: Chess and related 12-bar songs, amplified guitar, harp, and a club band that treats blues as the set, not as a rock original. Strength high. Beat and later hard-rock hops sit on other files.

Evidence

Mayall’s Bluesbreakers; Korner/Barber as the older hinge; Fleetwood Mac’s early blues 45s; covers of Wolf, Waters, and King.

Debate

Whether this is only R&B. The beat groups have a separate rhythm and blues british beat hop. This file is the named blues scene.

Mediators

artist: John Mayall; artist: Alexis Korner

Blues → Chicago jazz

harmonymelodyform and structureperformance practicestrength: highscholarly consensus1918–1928oralrecordingmigration

Mechanism

Chicago small-band jazz keeps blues as a chorus form and pitch language on the South Side: 12-bar vehicles, inflected thirds and sevenths, and a cabaret blues book. Strength high. blues jazz is the umbrella grammar; blues new orleans jazz is the first-style hop; this edge is the 1920s Chicago crystallization (Oliver, Armstrong’s Hot Five/Seven).

Evidence

Oliver’s Lincoln Gardens blues; Armstrong’s Chicago blues sides including West End Blues; Schuller on blues paraphrase as the solo job in that city.

Debate

Whether this is already carried by New Orleans migrants. The migrants bring the language; Chicago’s record and cabaret economy makes blues the local small-band default. Electric Chicago blues is a later neighbor, not this hop.

Mediators

artist: King Oliver; artist: Louis Armstrong; community: South Side Chicago cabarets

Blues → Country

melodyharmonyform and structurephrase and lickstrength: mediumscholarly consensus1927–1954recordingoral

Mechanism

Commercial country takes blues as a working language from the first national stars: Rodgers’s blue yodels, 12-bar and I–IV–V song, bent thirds, and guitar answering the voice. Strength medium on the umbrella — old-time fiddle-band repertory has other donors — and higher on the Rodgers/honky-tonk wing. A tighter landing is blues honky tonk. Anglo-Celtic ballad and parlor song remain a prose debt until those nodes exist.

Evidence

Rodgers’s blue-yodel series; Williams’s country-blues songs; Malone’s account of Black-and-white Southern exchange; Palmer on the shared vernacular.

Debate

Whether country is “White blues.” No: the industry and the string-band half are not blues. This edge is the audible African American share, not a claim of identity. The register-break refrain on the same Rodgers records is alpine yodel country, not this hop.

Mediators

artist: Jimmie Rodgers; artist: Hank Williams

Blues → Folk revival

melodyfunction and contextperformance practicestrength: mediumwell documented1959–1966recordingradiopedagogy

Mechanism

The revival takes country and songster blues as folk repertory: rediscovered players (Hurt, House, James) and younger White guitarists learn the 78s for campus and Newport. Strength medium. Work-song and old-time are other incoming books.

Evidence

Newport and coffeehouse bookings; the 1960s country-blues LP boom; campus guitarists covering Johnson and Hurt.

Debate

Whether the “blues revival” is a separate node. Kept on this hop into the named folk-revival movement; a later dedicated revival scene can be filed when that node is X.

Mediators

artist: Mississippi John Hurt; institution: Newport Folk Festival

Blues → Gospel

harmonymelodyperformance practiceinstrumentationstrength: highwell documented1926–1940oralrecordingliturgy

Mechanism

Modern gospel takes blues piano, inflection, and first-person song into the church: Dorsey writes sacred numbers that still sit in a blues-trained hand. Strength high for the composed-gospel hinge. spirituals gospel remains the older sacred parent.

Evidence

Dorsey’s career from Rainey’s pianist to “Take My Hand, Precious Lord”; blues cadences under gospel lyric; Southern and Burnim–Maultsby on that hinge.

Debate

Whether later choir gospel still “is blues.” The Dorsey-era song does; mass-choir arrangements can thin the blues surface without killing the hop.

Mediators

artist: Thomas A. Dorsey

Blues → Hard bop

harmonymelodyfunction and contextstrength: mediumscholarly consensus1954–1965oralrecording

Mechanism

Hard bop leans into blues after bebop’s first wave: 12-bar heads, blue cadence, a heavier bounce (Silver, Blakey, Adderleys). Strength medium. bebop hard bop is the school; gospel hard bop is the church wing. This hop is the secular blues share.

Evidence

Walkin’, The Preacher, Moanin’ as blues-rhetoric heads; Blue Note books full of 12-bar blowing.

Debate

Whether “the blues” here is already gospel. Keep both edges: church cadence vs secular 12-bar and blue pitch.

Mediators

artist: Horace Silver; artist: Art Blakey

Blues → Hard rock

harmonymelodyphrase and lickform and structurestrength: highscholarly consensus1966–1972recordingoral

Mechanism

Hard rock is electric blues played as rock spectacle: the same pentatonic boxes, bent thirds and sevenths, call-and-response licks, and 12-bar or I–IV–V cadences, now through stacks of gain and longer solos. British musicians learn from Chicago and Delta records; the song often remains a blues even when the arrangement is an album riff.

Shared material

twelve-bar bluesprogressionI–I–I–I | IV–IV–I–I | V–IV–I–I

Donor You Shook Me (Muddy Waters, 1962) · verses YouTube · Spotify

Receiver You Shook Me (Led Zeppelin, 1969) · 12-bar frame YouTube

Same Willie Dixon / J.B. Lenoir song and cycle; hard rock adds volume, riff density, and a longer solo

Evidence

Cream and Hendrix repertories built on blues forms; Zeppelin’s Dixon-derived tracks and pentatonic soloing; Purple’s blues-rock tunes beside the organ riffs. Palmer’s electric-blues history is the longer path into this style.

Debate

How much is “blues” versus “rock that quotes blues.” For this node the blues grammar is still the default; the metal edge is the one that drops it.

Mediators

artist: Cream; artist: Jimi Hendrix; artist: Led Zeppelin

Blues → Heavy metal

harmonymelodyphrase and lickstrength: mediumwell documented1969–1975recordingoral

Mechanism

Early metal players have blues hands: pentatonic boxes, bent notes, call-and-response licks, and a guitar-hero role learned from electric blues and hard rock. That inheritance is audible on Sabbath and Priest even when the song is a modal riff cycle rather than a 12-bar. Strength is medium: the target’s definitional move (Cope) is to drop shuffle, 12-bar circulation, and blues-cadence form. Blues explains the fingers, not the 1970 compositional object.

Evidence

Sabbath’s first records still use pentatonic melody and blues-rock timbre; some early-1970s metal tracks retain a 12-bar or blues-turnaround wing. The British blues boom is the mediator, not a second parent genre. Later children (thrash, death, black) often thin this residue further.

Debate

Popular histories say metal “is” loud blues. Cope treats that as the claim the founding records refute. Both can be true at different layers: lick and pitch language versus form and harmony. This edge keeps the audible layer and refuses to make blues definitional of the umbrella. Classical/virtuoso rhetoric (Walser) is a later metal-internal resource, not a substitute parent here.

Mediators

artist: Black Sabbath; community: British blues boom

Blues → Honky-tonk

harmonymelodyphrase and lickform and structurestrength: highwell documented1941–1953recordingoral

Mechanism

Honky-tonk is where country’s blues share becomes the bar default: 12-bar and I–IV–V cycles, bent thirds, and steel or electric guitar answering a crying voice. Strength high on this child. The umbrella edge blues country is the longer, thinner line.

Shared material

twelve-bar bluesprogressionI–I–I–I | IV–IV–I–I | V–IV–I–I

Donor Match Box Blues (Blind Lemon Jefferson, 1927) · verses YouTube · Spotify

Receiver Move It On Over (Hank Williams, 1947) · verses YouTube · Spotify

Same cycle; honky-tonk puts a country vocal and bar band on it. Not a quotation of this Jefferson record

Evidence

Williams and Tubb repertories built on country-blues forms; Malone and Palmer on the Southern bar as a shared room.

Debate

Whether this is blues or country. The corpus splits by industry and ensemble: honky-tonk is a country style that speaks blues.

Mediators

artist: Hank Williams; artist: Ernest Tubb

Blues → Jazz

harmonymelodyphrase and lickperformance practicestrength: highscholarly consensus1890–1940oralrecording

Mechanism

Jazz takes the blues as a harmonic cycle, a pitch language (inflected thirds, fifths, sevenths), and a way of making a personal sound on a repeating form. This is the long-term grammatical gift to the umbrella. The local crystallization in the first style is blues new orleans jazz. Ragtime and popular song supply other forms; blues supplies the bent pitch system and a large share of the jam-session default form.

Shared material

twelve-bar bluesprogressionI–I–I–I | IV–IV–I–I | V–IV–I–I

Donor St. Louis Blues (Bessie Smith, 1925) · choruses YouTube · Spotify

Receiver West End Blues (Louis Armstrong and His Hot Five, 1928) · choruses YouTube · Spotify

Same 12-bar cycle; Armstrong’s cadenza and mutes are jazz rhetoric on a blues form

Evidence

Oliver’s and Armstrong’s blues recordings; the blues as a required competence in swing and bebop books; Schuller’s transcriptions of early solos that are blues paraphrases. Parker’s blues heads (“Now’s the Time,” “Billie’s Bounce”) show the language still central after the style shift.

Debate

Whether jazz “comes from” blues alone (no) versus whether blues is definitional (yes, as one of a few roots). This edge does not deny ragtime, Caribbean rhythm, or the American popular song.

Mediators

artist: Louis Armstrong; artist: King Oliver

Blues → Jug band

harmonyform and structuremelodystrength: highscholarly consensus1915–1930oralrecording

Mechanism

The jug band’s songbook is blues: 12-bar and comic blues, AAB, guitar-and-harp language, with a jug as bass. Strength high. Medicine-show and ragtime color wait on the jug-band node.

Evidence

Memphis Jug Band and Cannon sides that are named blues; shared repertory with country-blues songsters.

Debate

How much is ragtime or breakdown. Those are additional strains, not the identity of the recorded book.

Mediators

artist: Memphis Jug Band; artist: Gus Cannon

Blues → New Orleans jazz

harmonymelodyform and structureperformance practicestrength: highscholarly consensus1895–1925oraldancerecording

Mechanism

The first jazz style takes the blues as a local vehicle and pitch language: 12-bar choruses, inflected thirds and sevenths, and a Saturday-night dance job already in Uptown bands before the first records. blues jazz is the long-term grammatical gift to the umbrella. This file is the New Orleans crystallization (Bolden, Oliver, Morton’s blues titles). Strength high. Ragtime supplies strain form; the march supplies parade kit; blues supplies the bent-pitch chorus.

Shared material

twelve-bar bluesprogressionI–I–I–I | IV–IV–I–I | V–IV–I–I

Donor Crazy Blues (Mamie Smith, 1920) · choruses YouTube · Spotify

Receiver Dippermouth Blues (King Oliver's Creole Jazz Band, 1923) · choruses YouTube · Spotify

Same 12-bar cycle; Oliver’s mutes and collective polyphony are the New Orleans recoding

Evidence

Oliver’s Dippermouth Blues; Morton and Armstrong blues sides cut as New Orleans (or New Orleans-trained) band music; contemporary testimony that some hall bands “played nothin’ but blues” (NPS Jazz NHP). Schuller transcribes early solos that are blues paraphrases inside collective polyphony.

Debate

Whether Bolden’s band was already “jazz” or a blues dance band. The consensus is that the blues was one of the three named local parents (with ragtime and brass-band march), not a later overlay. This edge does not deny ragtime, parade march, or Caribbean cells.

Mediators

artist: Buddy Bolden; artist: King Oliver; community: Uptown New Orleans dance bands

Blues → Old-time

melodyharmonyform and structurestrength: mediumwell documented1923–1935oralrecording

Mechanism

Early commercial string-band and songster records take blues songs and 12-bar form into the book later called old-time. Strength medium. blues country is the umbrella gift; this is the 1920s dialect. The hop is repertory and form, not a claim that fiddle breakdowns are blues.

Evidence

Stokes, Cannon-adjacent songsters, and mixed race/hillbilly sessions; Malone on blues in the early country book.

Debate

Whether songsters “are” old-time or blues. They sit on the border; this edge is the blues share of the old-time trade.

Mediators

artist: Frank Stokes; community: Southern songsters

Blues → Psychedelic rock

harmonyform and structuremelodyinstrumentationstrength: mediumscholarly consensus1966–1969recordingoral

Mechanism

A wing of psychedelia keeps blues form and pentatonic guitar and stretches duration, volume, and studio color (Cream, Hendrix, Dead jams on blues changes). Strength medium. blues rock is the umbrella gift; this is the 1966–69 local hop. Not every psychedelic band is a blues band.

Evidence

Cream’s Spoonful and related vamps; Hendrix’s blues-based studio sides; Dead and Airplane blues in the set.

Debate

Whether this is already blues hard rock. Hard rock keeps the song; psychedelia adds the long vamp and studio. Both edges stay.

Mediators

artist: Cream; artist: The Jimi Hendrix Experience

Blues → Rhythm and blues

form and structureharmonyinstrumentationtimbre and productionstrength: highwell documented1938–1955recordingoralradio

Mechanism

R&B is largely blues plus electricity, a dance drummer, and a shorter, louder recorded form. Jump-band shout blues (Jordan) and Chicago club blues (Waters, Wolf) keep 12-bar harmony and blues lyric stance while changing timbre and groove for urban nightlife. The “rhythm” in the trade name is that dance intensification.

Evidence

Chess, King, and Atlantic catalogs full of 12-bar and 8-bar blues with backbeat and sax or electric guitar leads. Waters’s “I Can’t Be Satisfied” / “Rollin’ Stone” period as a documented rural-to-urban instrument change.

Debate

How much jazz jump and how much gospel already sit inside 1940s R&B. This edge isolates the blues contribution; gospel has its own edge into R&B.

Mediators

artist: Louis Jordan; institution: Chess Records

Blues → Rock

harmonymelodyphrase and lickform and structurestrength: highscholarly consensus1962–1970recordingoral

Mechanism

The 1960s rock umbrella keeps blues as a working language, not a costume: pentatonic boxes, bent thirds and sevenths, 12-bar and I–IV–V cycles, and a shuffle or even-eight groove that still answers the voice. British beat and blues-boom groups learn from Chicago and Delta records; U.S. garage and later hard rock stay on the same grammar. Strength is high on the umbrella because that wing is constitutive, not a side hobby. A tighter, louder landing already exists at blues hard rock.

Shared material

Cross Road BluestuneI–IV–V blues recast as a riff vehicle

Donor Cross Road Blues (Robert Johnson, 1936) · verses YouTube · Spotify

Receiver Crossroads (Cream, 1968) · whole performance YouTube

Same Johnson song; Cream turns it into a riff-rock and solo vehicle

Evidence

Stones, Yardbirds, Animals, and Cream repertories built on blues forms; Palmer’s electric-blues path into British rock; Starr’s blues-rock chapter as a named 1960s wing.

Debate

Folk-rock and art-rock claim other parents. They still sit on a guitar-band default that blues and rock and roll jointly supplied. This edge is the blues share of that default, not a claim that every rock song is a blues.

Mediators

artist: The Rolling Stones; artist: The Yardbirds; artist: Cream

Blues → Rock and roll

rhythmphrase and lickinstrumentationstrength: highwell documented1954–1960recordingoralradio

Mechanism

Separate from the R&B-industry edge: rock and roll takes specific blues guitar and harmonica licks, boogie bass, and the stance of the electric solo as the song’s face. Berry turns Chicago/Delta guitar formulas into countable intro-and-solo architecture for teenagers. Bo Diddley’s one-chord ostinato is another blues-derived solution. This is phrase and instrument language, not only chart category.

Shared material

twelve-bar bluesprogressionI–I–I–I | IV–IV–I–I | V–IV–I–I

Donor Dust My Broom (Elmore James, 1951) · verses YouTube · Spotify

Receiver Johnny B. Goode (Chuck Berry, 1958) · verses YouTube · Spotify

Same 12-bar cycle; different tempo, guitar rhetoric, and youth-market finish

Evidence

Berry’s documented listening to Muddy Waters and to country radio; the recurring intro figure as a transported blues lick. British and U.S. later rockers learn “rock and roll” by learning those guitar phrases.

Debate

How much of Berry is blues versus country. Both are present; this edge isolates the blues-lick contribution. The R&B edge covers band-and-backbeat industry facts.

Mediators

artist: Chuck Berry; artist: Bo Diddley

Blues → Roots rock

harmonymelodyphrase and lickstrength: mediumwell documented1968–1972recordingoral

Mechanism

Roots rock uses blues as speech, not as a loud-rock clinic: pentatonic lines, I–IV–V or 12-bar frames, and guitar answering the voice. The Band and CCR keep that grammar at club-to-radio volume. Strength medium on the node as a whole — rock and roll is the heavier song-form donor; this is the pitch-and-cycle share. A louder landing already exists at blues hard rock.

Evidence

Band and CCR tunes built on blues cycles and bent melody; Palmer’s longer path of blues into vernacular popular music; Starr’s reading of their repertory.

Debate

Whether swamp-rock and “the old, weird America” are blues, country, or invention. The corpus splits donors: this edge is the blues share. country roots rock is the country share.

Mediators

artist: The Band; artist: Creedence Clearwater Revival

Blues → Skiffle

melodyform and structurefunction and contextstrength: highwell documented1955–1958recordingoral

Mechanism

Skiffle’s songbook is blues and songster material (Lead Belly as the usual crate) played on cheap acoustic kit. Strength high. Jug band supplies the homemade ensemble; this hop is the songs. Lead Belly is a mediator, not a node.

Evidence

Rock Island Line and related Donegan 45s; Gillett and Palmer on that crate.

Debate

Whether this is folk, not blues. The named Lead Belly book sits on blues and songster ground; folk-revival is a sibling scene, not the parent.

Mediators

artist: Lonnie Donegan; artist: Lead Belly

Blues → Soul

form and structuremelodymeter and groovestrength: mediumscholarly consensus1962–1968recordingradiooral

Mechanism

Southern soul keeps blues’s twelve-bar rhetoric, bent melody, and small electric band, under a gospel-trained lead. Strength medium. Rhythm and blues remains the combo-and-market parent; this hop is the blues song language at Stax and kin, not the 1940s jump.

Evidence

Redding and allied Memphis sides against electric blues form (Burnim/Maultsby, Palmer).

Debate

Whether this is already R&B. Jump R&B is the urban dance parent; the 12-bar Southern residue is blues’s.

Mediators

artist: Otis Redding; institution: Stax Records

Blues → Swing

form and structureharmonyphrase and lickstrength: mediumscholarly consensus1928–1942oralrecordingradio

Mechanism

Swing bands keep 12-bar blues and riff-chorus blues as a working language beside the 32-bar song. Strength medium. New Orleans jazz is the band-style parent; this hop is the blues book (Basie as the usual hinge).

Evidence

Basie blues heads; Ellington and Goodman blues charts; Schuller and DeVeaux on that common practice.

Debate

Whether this is already jazz-internal. The named blues school is still the donor of the 12-bar cell.

Mediators

artist: Count Basie

Blues → Western swing

harmonymelodyphrase and lickstrength: mediumwell documented1934–1947oralrecordingradio

Mechanism

Western swing takes 12-bar blues and blues guitar onto a Texas string-and-horn dance band. Strength medium. Swing supplies the jazz-band job; Country the chassis. This hop is the blues song and the bent-string lead, not the whole style.

Evidence

Wills and Milton Brown books with named blues; Texas guitarists who sit next to electric blues; Malone on the mixed dance book.

Debate

How much is jazz-blues versus country-blues. Either reading still needs a blues donor.

Mediators

artist: Bob Wills