Ryan Keberle & Catharsis

Jazz brass is a jazz-centered approach that foregrounds brass instruments—chiefly trumpet, trombone, and tuba/sousaphone—either as solo voices or as harmonized horn sections. It emphasizes the distinct timbres, colors, and articulations available to brass, from velvety cup-muted lines and plunger “wa-wa” effects to open-horn brilliance and growls. Across small combos and big bands alike, jazz brass is defined by swing and post–swing rhythmic feels, riff-based call-and-response, shout choruses, and an improvisational language rooted in the blues. Early forms drew on New Orleans marching/brass band traditions and ragtime; later developments absorbed bebop’s chromaticism and hard bop’s gospel/blues inflections, while contemporary practice spans straight-ahead, second-line, and modern chamber-like brass voicings. In performance, brass players exploit mutes (Harmon, cup, plunger, bucket), lip slurs, half-valve effects, shakes, smears, and flutter-tongue to shape phrases—making tone color and articulation as central as harmony and rhythm.

Jazz is an improvisation-centered music tradition that emerged from African American communities in the early 20th century. It blends blues feeling, ragtime syncopation, European harmonic practice, and brass band instrumentation into a flexible, conversational art. Defining features include swing rhythm (a triplet-based pulse), call-and-response phrasing, blue notes, and extended harmonies built on 7ths, 9ths, 11ths, and 13ths. Jazz is as much a way of making music—spontaneous interaction, variation, and personal sound—as it is a set of forms and tunes. Across its history, jazz has continually hybridized, from New Orleans ensembles and big-band swing to bebop, cool and hard bop, modal and free jazz, fusion, and contemporary cross-genre experiments. Its influence permeates global popular and art music.