condition (record/cover): VG (hazy film and surface noise produced by PVC outgassing, common to most copies) / VG+ (4" seam split)

Silk-screened PVC sleeve. No insert.

The first electroacoustic music compilation ever released in Mexico, the third volume in the Colección Hispano-Mexicana de Música Contemporánea series co-curated by Antonio Russek and the artist Ángel Cósmos. Side A: Russek's Para Espacios Abiertos (14 minutes), then Raúl Pavón Sarrelangue's Fantasía Cósmica (Pavón was the senior figure, b. 1924, an early Mexican synthesiser builder and the founder of the Centro Independiente de Investigaciones Musicales y Multimedia). Side B: Roberto Morales Manzanares' Agua and Vicente Rojo Cama's contribution.

Original sleeve: black PVC with a screen-printed cover graphic by the painter Vicente Rojo Sr. (father of Vicente Rojo Cama) titled México Bajo la Lluvia. 1000 copies pressed, many damaged by the PVC sleeve's off-gassing onto the vinyl, making original copies rare in playable condition. Issued without separate catalogue, simply "84" on the labels. Reissued by Aurora Central Records in October 2025 with restored sleeve and bilingual liner notes, remastered from original tapes by Russek.