The research involved the creation and performance in Hamburg, Tokyo, Palermo, New York, Melbourne and Perth of works exploring spectral analysis as a compositional tool: unhorbares wird horbar  and in nomine tenebris  for Decibel, between-states  and residual drift  for Kirsten Smith, Remnants  for Zubin Kanga and Decibel, and Kuroinami composer for Biwa player Mitsuaki Matsumoto and Decibel. The works expanded the author's practice-based investigation of techniques for interchanging data between visual and sonic media using performative and machine processes.The works developed means of transcribing electronic sounds created by the composer using analysis of their spectral components to create a variety of scores, synchronised audio processing control and MIDI data for disklavier. Software to resonify graphical images was also created in conjunction with these works. The works innovatively combine traditional, gestural and spectrographic notation investigating techniques for conveying continuous pitch, dynamic and timbral information to performers.The works were performed in New York (The Firehouse Space), Tokyo Wonder Site Residency, Hamburg (DAAD Residency), Palermo (Curva Minore Festival), Melbourne Recital Centre and Perth. The research formed the basis for papers in the journal Organised Sound, and TENOR, International and Australasian Computer Music conferences.