
Second line is a participatory parade music and dance tradition from New Orleans in which a brass band (the "main line") leads a moving street procession while revelers fall in behind as the "second line." The sound is built on a distinctive second‑line beat: a rolling, syncopated, press‑roll snare feel over a two‑and‑four backbeat, often inflected by Afro‑Caribbean tresillo/habanera accents.
Musically it blends early New Orleans jazz, marching/brass band repertoire, blues, gospel, rhythm & blues, and later funk. Typical instrumentation includes trumpets, trombones, saxophones, sousaphone/tuba, and a two‑person drum line (snare and bass), with call‑and‑response horn riffs, tailgating trombone glissandi, walking or percussive sousaphone lines, and shout choruses designed to energize dancers. The overall feel is celebratory, communal, and mobile—music made to move through the streets.
Second line emerged from the Black social, cultural, and mutual‑aid fabric of New Orleans—especially Social Aid & Pleasure Clubs (SAPCs) and jazz funerals. Brass bands adapted military and marching repertoire to local dance needs, mixing it with blues, spirituals, and Caribbean rhythmic cells. The “second line” referred to community members who followed the band, waving handkerchiefs and umbrellas and transforming a procession into a street party.
As early jazz took shape, parade bands codified a snare approach of press rolls, off‑beat accents, and swing that powered Sunday parades and life‑cycle ceremonies. The same lilt fed New Orleans R&B; drummers translated parade syncopations into backbeat‑driven grooves that helped define the city’s mid‑century sound.
A new wave of brass bands modernized the idiom, folding in funk horn voicings, blues‑based vamps, and gospel shouts while keeping the street‑parade core. Community parades remained anchored by SAPCs and neighborhood routes, even as the music found club and festival stages.
After the early‑2000s, the tradition rebounded strongly, with youth programs, women‑led bands, and cross‑genre collaborations. The second‑line aesthetic—portable, communal, and groove‑focused—inspired brass ensembles and street‑parade cultures worldwide while remaining a living New Orleans practice tied to local clubs, neighborhoods, and calendars.