Remanence, or residual magnetization, is the property where by a demagnetized material retains a trace of its original magnetization. Remanence I-IV is a series of works created from a demagnetized VHS library copy of Jonas Mekas' Lost, Lost, Lost (1976). The works use the orignal VHS tape and its remanent magnetic fields as its source material for generating both sound and image. The sound is taken directly from the cathode ray tube using an electromagnetic microphone.