Peter Rundel

Contemporary choir is the umbrella for late‑20th and 21st‑century choral music written for professional chamber choirs, advanced collegiate ensembles, and skilled community choirs. It favors clear textures, flexible tonality (from lush pandiatonicism to modal writing), and sonorities built from clustered, added‑tone, and suspended harmonies. While much of the repertoire is a cappella, contemporary choir frequently incorporates subtle percussion, drones, electronics, and orchestral or chamber accompaniments. Texts range from Latin liturgy and vernacular sacred poetry to modern literature and newly commissioned libretti. Extended techniques—overtone singing, whispering, body percussion, glissandi, and aleatoric "clouds"—coexist with traditional legato blend and pure intonation.

Avant-garde music is an umbrella term for boundary-pushing practices that challenge prevailing norms of harmony, rhythm, timbre, form, and performance. It privileges experimentation, conceptual rigor, and a willingness to reframe what counts as music at all. Historically tied to early 20th‑century artistic modernism, avant-garde music introduced atonality, the emancipation of noise, and new forms of notation and process. It embraces indeterminacy, extended techniques, electronics, spatialization, and multimedia performance, treating sound as material to be sculpted, questioned, and reinvented.