The specified pitches are made to generate their own accompanying frequencies, generally inharmonic with respect to the pitches themselves, as a result of FM or AM procedures. Each interval, or, in fact, each pitch-pair (or if you don't want to limit yourself to the chromatic scale, each pair of arbitrarily decided upon frequencies) can generate several possible spectra, but the similarity in sound quality between kinds of spectra quickly reduces to a limited number of readily manageable families of chord-types. These chords are the basis for a variety of musically interesting relationships, and this work represents but one of many possible developments of these kinds of sounds. The clarinetist in this recording is Philip Rehfeldt.

Recording of Iván Székely's For Alrun I et II. The work entitled "For Alrun" was composed in 1975 in Bayreuth during a live electronics course. The singing part of the play of about 7 minutes, a form and a light local broadcast, contains the popular song tchango beginning with the words "Gyere ki te gyšngyvirag" / come, leave my beautiful, my lily of the valley / - this one will have to be changed to all the presentations in Hungarian. This task was undertaken at the world premiere by Alrun Zahoransky - hence the title of the work. The player applying the electronics, especially from the point of view of the instrumentation, produces sounds and manipulates the electronic sounds and the human voice. The piece does not require studio work, each tone or voice sounds in vivo (i.e. each presentation, each show is new). The focus is on the psychic process of the piece and not on the technical process; its different degrees of difficulty adapt to the possibilities of the presentation. The singer is Ágnes Zsigmondi. The translation of the song is: Come, leave my beautiful, my lily of the valley, Because the moon is mounted, alas. I will …

Recording of Hildegard Westerkamp's Whisper Study (for two electroacoustic sound tracks). Whisper Study is based on the sentence "When there is no sound, hearing is most alert" (a quote from the Indian mystic Kirpal Singh. Except for the distant horns, all sounds were derived from the composer's voice, whispering the above sentence and the word "silence." Whisper Study started out as an exercise in exploring basic tape techniques in the analog studio of the 70s and using the whispered voice as sound material. Eventually, it became a piece about silence, aural perception and acoustic imagination. Whisper Study explores the place or moment where sound ends and its image begins. The poem "When There is No Sound" by Norbert Ruebstaat was written in direct response to the original version of Whisper Study. The poem in this version is spoken by the composer inside a soundscape of icicles and footsteps in snow, which originally was created for her radio series Soundwalking on Vancouver Co-operative Radio in 1978/79. Eventually this section was mixed with the last part of the original version of Whisper Study.