Toop 246: "Ecology, anthropology, physics, semiotics, land art and conceptual art levered music into an area where sound and listening could take precedence over the intention of the composter. Alvin Curran, Evan Parker, David Dunn, Pauline Oliveros, Stuart Dempster, Albert Mayr, Paul Burwell, Hugh Davies, Michael Parson, and the late Stuart Marshall investigated [...] aspects of echoes and the articulation or mapping of space, ranging from the peculiarities of indoor acoustics to echoes across water and distance and natural ampitheatres."
David Dunn's Nexus I is realized "four miles within the interior of the Grand Canyon"