The 'Ghost Score' was developed by Morton Subotnick in 1977 to complement the performance of specific orchestrations he created. Used with a soloist or quartet, the Ghost takes the input of the instrumentation and affects three parameters; panning, frequency, and amplitude. The original Ghosts contained a tape and small package of electronics. These objects did not generate any sound; they only acted upon the sound of the instrumentation.
While working as Mr. Subotnick's assistant, I ported these devices to Max/MSP for sale or rental. The process was to listen to a recording of the original performance and translate the tape timings to a series of 'cues' in Max. In total, I ported six Ghost Scores; Arsenal of Defense, Axolotl, Fluttering of Wings, Liquid Strata, Passages of the Beast, & Trembling.
For more information, or to inquire to purchase or rent a Ghost Score, visit Mr. Subotnick's website here.