R.L. Burnside

Electric blues is a postwar evolution of the blues that centers on amplified instruments and a compact, urban band sound. It emerged when rural blues musicians brought their music to industrial cities and adopted electric guitar, amplified harmonica, bass, drums, and piano to cut through noisy clubs. Musically, electric blues relies on 12‑bar and 8‑bar forms, dominant‑7th harmony, and a swung shuffle or boogie groove. Guitarists use string bends, wide vibrato, double‑stops, turnarounds, and call‑and‑response with vocals and harmonica. Amplified harmonica (often through a bullet mic and small tube amp) acts like a lead horn, trading riffs with the guitar. The sound is thick, gritty, and vocal, with tube‑amp breakup, subtle reverb, and sometimes tremolo. Lyrically, themes cover migration, love and betrayal, work and hardship, and the pulse of city life. Regionally, Chicago became the emblem of the style, but strong variants also blossomed in Memphis, Detroit, and Texas.

Hill country blues is a North Mississippi style of country blues built on hypnotic, groove-forward vamps rather than frequent chord changes. The music favors droning riffs, modal inflections, and trance-like repetition over the 12-bar harmony typical of Delta blues. Guitars are often in open tunings with percussive right-hand patterns, slides, and call-and-response vocals. The rhythm is deeply influenced by local fife-and-drum traditions, producing interlocking, danceable patterns that can feel both raw and mesmerizing. Performances historically thrived in house parties and juke joints, where the music’s looping energy kept dancers moving for extended, improvisatory stretches.

Delta blues is a raw, emotionally direct style of country blues that emerged in the Mississippi Delta—an alluvial plain stretching from Memphis to Vicksburg. It is typically performed by a solo singer accompanying themselves on acoustic guitar, often with bottleneck slide. Hallmarks include expressive, speech-like vocals; flexible, rubato timing; insistent thumb-driven bass patterns; syncopated treble figures; and frequent use of open tunings. Lyrics are vivid and personal, touching on hardship, migration, love, work, spirituality, and folklore. Though commonly framed by 12‑bar and 8‑bar blues forms, Delta blues thrives on elastic phrasing, blue notes, and call-and-response between voice and guitar. Its sound is earthy, gritty, and intimate—music for porches, juke joints, and field gatherings—yet it became one of the most influential sources for electric urban blues and rock.

Country blues—also called rural blues or folk blues—is the earliest widely documented form of the blues, rooted in the everyday music-making of African Americans in the rural American South. It typically features a solo singer accompanying themselves on acoustic guitar, with flexible time, expressive vocal delivery, and abundant use of blue notes. While 12‑bar structures are common, country blues often stretches or compresses measures to fit the lyric, making phrasing elastic and conversational. Regional flavors emerged—Delta (driving, droning thumb bass and slide), Piedmont (ragtime‑inflected fingerpicking), and Texas (looser phrasing and single‑string leads)—but all share storytelling lyrics about work, travel, love, hardship, and spiritual longing.

Acoustic blues is a family of blues styles performed on non-amplified instruments, most commonly solo voice with acoustic guitar and, at times, harmonica. It emphasizes raw, intimate timbres; elastic vocal phrasing; and guitar techniques such as fingerpicking, alternating-bass patterns, and bottleneck slide. Rooted in African American folk traditions of the U.S. South, acoustic blues typically favors small-scale, conversational performance practice—call-and-response between voice and guitar, expressive "blue notes," and lyrics in the AAB stanza form. Substyles include Delta blues (driving, slide-heavy), Piedmont blues (ragtime-influenced fingerpicking), and Texas blues (looser, narrative-driven playing).

Classic blues (often called "classic female blues") is the early, urban, theater-bred form of the blues that flourished primarily in the 1920s. It is characterized by powerful lead vocalists—frequently women—fronting small jazz ensembles or a piano accompanist, with arrangements that translated the blues idiom to vaudeville stages and recording studios. Musically it typically uses the 12‑bar blues form, AAB lyric stanzas, swung or shuffle rhythms in 4/4, and prominent use of blue notes (flattened 3rd, 5th, and 7th). The style sits at the crossroads of Southern blues traditions, ragtime and early jazz, and the songcraft and professionalism of vaudeville and Tin Pan Alley. Classic blues differs from country/delta blues by its more formal arrangements, band instrumentation, and theatrical delivery. It launched the commercial “race records” era with Mamie Smith’s 1920 hit "Crazy Blues," and set the template for later jazz and R&B vocal performance.

Blues is an African American musical tradition defined by expressive "blue notes," call-and-response phrasing, and a characteristic use of dominant-seventh harmony in cyclical song forms (most famously the 12‑bar blues). It is as much a feeling as a form, conveying sorrow, resilience, humor, and hard-won joy. Musically, blues commonly employs the I–IV–V progression, swung or shuffled rhythms, and the AAB lyric stanza. Melodies lean on the minor/major third ambiguity and the flattened fifth and seventh degrees. Core instruments include voice, guitar (acoustic or electric), harmonica, piano, bass, and drums, with slide guitar, bends, and vocal melismas as signature techniques. Over time the blues has diversified into regional and stylistic currents—Delta and Piedmont country blues, urban Chicago and Texas blues, West Coast jump and boogie-woogie—while profoundly shaping jazz, rhythm & blues, rock and roll, soul, funk, and much of modern popular music.

Electronic is a broad umbrella genre defined by the primary use of electronically generated or electronically processed sound. It encompasses music made with synthesizers, drum machines, samplers, computers, and studio/tape techniques, as well as electroacoustic manipulation of recorded or synthetic sources. The genre ranges from academic and experimental traditions to popular and dance-oriented forms. While its sonic palette is rooted in electricity and circuitry, its aesthetics span minimal and textural explorations, structured song forms, and beat-driven club permutations. Electronic emphasizes sound design, timbre, and studio-as-instrument practices as much as melody and harmony.

American folk music is a broad family of traditional and vernacular musics that developed in the United States from the 19th century onward, drawing on British Isles balladry, African American spirituals and work songs, Native American traditions, and frontier songs. It is typically acoustic, emphasizing voice and narrative over virtuoso display. Common instruments include acoustic guitar, banjo, fiddle, harmonica, mandolin, dulcimer, and upright bass. Forms are often strophic with repeated refrains, and melodies frequently use pentatonic or modal scales (Mixolydian, Dorian). Lyrical themes range from love, labor, faith, migration, and rural life to topical protest and social justice. Regional styles—such as Appalachian ballads and string-band music, cowboy songs of the West, maritime shanties of New England, Cajun and Creole influences in Louisiana, and Midwestern and Southwestern dance tunes—sit under the umbrella of American folk, which later fed revivals and singer‑songwriter traditions.