Title: Echo
Subjects: Sound, Musical instruments, Music, Acoustics and physics, Recording and reproducing, Architectural acoustics, Construction, Sound sculpture, Performance art, Music festivals, Echo Festival, ECHO, the Images of Sound (Festival), ECHO, the Images of Sound (Festival) (uri) http://id.loc.gov/authorities/names/no00068206 (uri) http://viaf.org/viaf/sourceID/LC|no00068206