Egberto Gismonti

Avant-prog (avant-garde progressive rock) is a branch of progressive rock that emphasizes experimentation, dissonance, and structural innovation. It often blends rock instrumentation with chamber-music timbres (strings, woodwinds, brass) and techniques borrowed from 20th‑century classical music, free jazz, and minimalism. Typical traits include irregular and shifting meters, abrupt contrasts, complex counterpoint, atonal or modal harmony, extended techniques, and through-composed forms that minimize or abandon verse/chorus structures. The mood ranges from stark and austere to playfully surreal, with a frequent penchant for theatricality and sound collage. The movement’s ethos—crystallized by the late‑1970s Rock in Opposition (RIO) collective—was as much cultural as musical, favoring artistic independence, DIY production, and an oppositional stance toward commercial music industry norms.

Samba‑jazz is a Brazilian small‑combo style that fuses the propulsive, syncopated rhythms of samba with the harmony, form, and improvisational language of modern jazz (especially hard bop and cool jazz). It is typically more energetic and instrumental than bossa nova, emphasizing virtuosic interaction in piano‑trio and quartet/quintet settings. The drumming concept—pioneered by Edison Machado and others—moves the samba pulse to the ride cymbal and hi‑hat ("samba no prato"), while the bass suggests surdo patterns and the piano/guitar supplies rich jazz voicings. Heads are often concise, followed by swinging, straight‑eighth samba grooves under extended improvisations, and a tight return to the theme.

Brazilian jazz is the meeting point of Brazilian popular music and North American jazz, blending samba and bossa nova rhythms with jazz harmony, improvisation, and ensemble interaction. The style typically features syncopated Brazilian grooves (samba, bossa, partido‑alto) under extended jazz chord voicings and lyrical melodies. Acoustic guitar or piano often supplies a gently propulsive, off‑beat rhythmic bed, while bass and drums translate samba’s surdo and pandeiro patterns to the jazz rhythm section. Timbres range from intimate (nylon‑string guitar, brushed drum kit, flute) to expansive (full percussion batteries, horns, and electric keys). The overall feel can be both laid‑back and danceable—romantic yet harmonically sophisticated.

Latin jazz is a fusion of jazz harmony and improvisation with Afro–Latin American rhythms, song forms, and percussion. It combines the swing, bebop, and big-band traditions with clave-based grooves such as son, rumba, danzón, and mambo, and later integrates Brazilian feels like samba and bossa nova. Typical features include the use of the clave (2–3 or 3–2), piano montunos (guajeos), bass tumbao patterns, timbales cáscara, conga marcha, and call-and-response horn "mambo" figures. While the rhythm section locks into cyclical patterns, soloists improvise using the vocabulary of jazz, creating music that is both danceable and harmonically rich.

Contemporary classical is the broad field of Western art music created after World War II. It embraces an array of aesthetics—from serialism and indeterminacy to minimalism, spectralism, electroacoustic practices, and post‑tonal lyricism—while retaining a concern for notated composition and timbral innovation. Unlike the unified styles of earlier eras, contemporary classical is pluralistic. Composers freely mix acoustic and electronic sound, expand instrumental techniques, adopt non‑Western tuning and rhythm, and explore new forms, from process-based structures to open and graphic scores. The result is a music that can be rigorously complex or radically simple, technologically experimental or intimately acoustic, yet consistently focused on extending how musical time, timbre, and form can be shaped.

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.