Jimmy Dorsey

Swing is a jazz style centered on a buoyant, danceable groove created by a walking bass, four-to-the-bar rhythm guitar, a backbeat emphasis on 2 and 4, and a lilted “swung” eighth-note feel. Typically performed by big bands (saxes, trumpets, trombones, and a rhythm section) as well as small combos, it balances written arrangements with improvised solos. Hallmarks include call-and-response between horn sections, riff-based melodies, shout choruses that build intensity near the end of an arrangement, and rich sectional voicings grounded in blues language and ii–V–I harmonic motion. Tempos range from medium to brisk, serving social dances like the Lindy Hop and Jitterbug. Swing’s expressive phrasing, dance-floor focus, and sophisticated arranging made it the dominant popular music of the late 1930s and early 1940s.

Rhumba (spelled with an “h”) is the Americanized, ballroom- and big-band-friendly adaptation of Cuban rumba and related Afro‑Cuban dance music. Emerging in the United States during the Latin dance craze of the 1930s, it translated the clave-based grooves and romantic lyricism of Cuban music into a smoother, slower, and more arranged popular dance style suited to hotel ballrooms, Hollywood, and radio. Compared with traditional Cuban rumba and son, American rhumba emphasizes clear phrase structure, a moderate tempo, and lush arrangements featuring strings, horns, and rhythm sections enhanced by Latin percussion. The result is a sensuous, elegant dance music that foregrounds romance and a steady, dancer-friendly pulse.

Big band is a large-ensemble style of jazz and popular dance music built around brass, reed, and rhythm sections playing arranged parts. Typical instrumentation includes five saxophones (often doubling clarinet/flute), four trombones, four trumpets, and a rhythm section of piano, guitar, upright bass, and drum set. The music emphasizes swing rhythms, call-and-response between sections, riff-based writing, and dramatic shout choruses, while leaving space for improvised solos. Born in American ballrooms and theaters, big band became the sound of the Swing Era, providing both music for dancing and a platform for sophisticated arranging and orchestration that shaped much of 20th‑century jazz and popular music.

Dixieland is one of the earliest forms of jazz, crystallizing in New Orleans in the 1910s and spreading to Chicago and New York in the 1920s. It is characterized by collective improvisation, where the front line—trumpet or cornet carrying the melody, clarinet weaving countermelodies, and trombone providing "tailgate" harmonies and slides—creates a lively polyphonic texture over a buoyant two-beat feel. Its rhythm section often features banjo or piano, tuba or string bass, and drums playing parade-derived press rolls and stop-time figures. Harmonically it draws on functional tonality (I–IV–V with frequent secondary dominants), and structurally it favors 12-bar blues, 16-bar strains from ragtime, and 32-bar AABA song forms. Repertoire includes marches, blues, spirituals, popular songs, and Creole dances, rendered with a brassy, celebratory sound that evokes the New Orleans brass band tradition.

Rumba is an Afro‑Cuban, percussion‑driven song‑and‑dance genre that arose in the port neighborhoods and solares of Havana and Matanzas. It features complex interlocking rhythms played on congas (tumbadora, segundo, quinto), claves, and palitos, with the quinto drum improvising over cyclical patterns. The music is built around the rumba clave (in 3‑2 or 2‑3 orientation), call‑and‑response vocals, and a lead singer who declaims verses followed by catchy coros. Three principal styles exist: yambú (slow, playful), guaguancó (medium, flirtatious, with the iconic "vacunao" gesture in the dance), and columbia (fast, virtuosic, traditionally for solo male dancers). Historically performed with cajones (wooden boxes) when drums were restricted, rumba is a secular, community practice whose poetry, dance, and rhythm encode Afro‑Cuban history and identity. It is distinct from ballroom "rhumba" and from Congolese rumba, both of which were influenced by Cuban music rather than being the same style.

Polka is a lively Central European couple dance and musical style in a brisk 2/4 meter, characterized by its buoyant “oom‑pah” bass-chord accompaniment and bright, diatonic melodies. Originating in Bohemia (today’s Czech Republic) in the early 19th century, it quickly became a pan-European craze before taking root across immigrant communities in the Americas. Ensembles typically feature accordion or button box/concertina, clarinet or saxophone, trumpets/trombone, tuba or string bass, and drum kit, with regional variants highlighting different lead voices and rhythmic feels. While the classical ballroom tradition codified polka into formal strains (often AABB with a contrasting trio), folk and popular styles favor singable tunes, simple I–IV–V harmonies, and tempos commonly around 115–135 BPM, inviting upbeat social dancing and communal celebration.