Heiner Goebbels

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.

Show tunes are songs written for stage musicals and revues, designed to advance plot, reveal character, or provide memorable set‑piece moments. They favor strong, singable melodies, clear structures (often AABA 32‑bar or verse–chorus), witty and narrative lyrics, and orchestrations that support drama and choreography. While rooted in the Great American Songbook, show tunes draw on operetta, vaudeville, ragtime, jazz, and popular songcraft, and they are typically performed by stage voices (from legit to belt) with pit orchestras. Because many became popular standards beyond the theater, show tunes occupy a central place in American popular music and are frequently adapted for cabaret, big band, and vocal jazz.

Musical theatre and entertainment is an umbrella term for stage works that combine spoken drama with song, dance, comedy, and popular spectacle. It spans a range of formats—revue, vaudeville/variety, music hall, operetta, zarzuela, cabaret, and, later, the modern musical—that were designed first and foremost to delight broad public audiences. In theatre studies it is often treated as one of the four classical branches of the theater (alongside spoken drama, opera, and dance/ballet). Historically, it crystallized in Europe and the United States during the 19th century and flourished into the mid‑20th century, evolving in dialogue with popular music, dance fashions, and new technologies (from gas and electric lighting to film and radio).