Shadow Soundings creates a real time connection between the 25th of April Bridge and MAAT in Lisbon. Live cameras, microphones, accelerometers and hydrophones create an abstract real time media art work for the 800 Square Meter Oval Gallery, the main exhibtion space in the Museum. There is one Channels of live video from a camera on top of the South Towe . There are 6 channels of recorded video from the bridge. The moving images will be projected onto hanging screens viewable on both side., An immersive sound sculpture is created from two parallel rings of speakers. One ring will surround the inner core of the Oval Gallery and will play a sonic choreography made from the live oscillating tones of traffic over a steel grid roadway and accelerometers picking up the accuulative sonic energy from the main suspension cables. A second parallel ring of speakers sounds over the outer walkway ramp surroiuning the Oval Gallery and plays a spatial composition derived from a live hydrophone in the Tagus River. This live hydrophine sound also plays from speakers on the river facing facade of MAAT.