Mauricio Kagel's Acustica (1968-70), composed for experimental sound producers and loudspeakers, stands among his most ambitious and radical works. Combining electro-acoustic tape material created at WDR with acoustic performances on roughly 200 graphic-score cards, it embodies Kagel's idea of instrumentales theater - where sound, gesture, and performer presence merge into a single dramatic and musical act. The work explores an expanded field of musicality, using invented instruments and found objects to free sound from traditional performance conventions. Avantgarde Vinyl Series features limited and numbered editions pressed on 180g vinyl with original artwork and a newly designed, beautifully crafted collector's sleeve with new liner notes by Bradford Bailey. Mastered and cut from the original analog 1/4-inch, 2-track tapes by Rainer Maillard and Sidney Claire Meyer at Emil Berliner Studios.