Esther Søndergaard, a Danish physiologist, and Nikolaj Søndergaard,
an engineer, are a married couple from Copenhagen.
Inspired by the electronic sound in the 70s, they recorded these interesting works using medical and scientific equipment among other
as a hobby. Their main goal was to engage a human body
in the process of controlling the track. The parameters of natural processes, such as heartbeat, blood pressure and breathing became
the triggers and the basis for the improvisation.
Luckily, Copenhagen is an unofficial capital of world’s vibration
and acoustic measurement. Such monsters of this industry
as Brüel & Kjær and Ortofon have their headquarters here.
Nikolaj worked at a big architect firm where he performed acoustic measurements of both new buildings and old houses that require restoration. Thus Esther and Nikolaj had access to different equipment that has to do with fixation and examination of acoustic data and were experienced in using it.