Greatly expanded 2-cd rerelease of Spiegel's 1980 LP containing over 2½ hours of music created at Bell Telephone Labs during the 1970s.
Composed 1974-76 using a computer playing the actual sounds by controlling analog synthesis equipment using the GROOVE (Generating Realtime Operations On Voltage-controlled Equipment) hybrid system which was developed by Max Matthews and F.R. Moore at Bell labs. Interaction with the computer was through a keyboard, a drawing tablet, pushbuttons and knobs, as well as complex "algorhythms" written in FORTRAN.
Mastered by SNB.
© 1980 Laurie Spiegel Publishing
This record ℗ 1980 Philo® Records, Inc.

A retrospective of Spiegel's work through the 70s and 80s, performed on currently obsolete electronic instruments.
Swells (c. 1972)
Electrocomp 100 modular analog synthesizer
Mines (1971)
Modular analog synthesizer, built by Don Buchla, mid-1960s
Crying Tone (1975)
Electrocomp modular analog synthesizer by Electronic Music Labs, CT circa 1969
A Garden (c. 1970)
Buchla 100 modular analog synthesizer with tape delay
Improvisation On A "Concerto Generator" (1977)
Realtime digital audio synthesizer by Hal Alles et al, Bell Labs
A Harmonic Algorithm (1981 version)
Apple II computer with Mountain Hardware oscillator boards
Three Modal Pieces (1983)
Electronic tape realized on McLeyvier computer-controlled analog synthesis music system
Immersion (1983)
Electronic tape realized on McLeyvier computer-controlled analog synthesis music system
Drums (1975)
GROOVE Hybrid System at Bell Labs
Voices Within: A Requiem (1979)
Electrocomp with classic tape techniques & Echoplex (a tape-delay device of the 1970s)
Total duration 1:04:41
Cover photograph © 2001 Enrico Ferorelli
©℗ Laurie Spiegel / Laurie Spiegel Publishing (ASCAP)
©℗ Electronic Music Foundation Ltd.
Released with 8 pp. booklet

Total Program Length: 57:21
Laurie Spiegel liner notes: Nov. 1990, New York City
Spiegel photos: Marilyn McLaren, NYC
Graphic Design: Nancy L. Thornton, NYC
Rear:
© ® 1987-94 Laurie Spiegel / Laurie Spiegel Publishing (ASCAP)
Front insert:
© ℗ 1987-94 Laurie Spiegel / Laurie Spiegel Publishing (ASCAP)
Disc:
© ℗ 1987-94 Laurie Spiegel
Laurie Spiegel Publishing ASCAP
Made in USA.
Catalog number:
Aesthetic Engineering 11001-2 digital (spine)
Æ 11001-2 (front insert, rear)
AE 11001-2 (disc)
The above tracklist is printed on rear. The full main titles read as follows:
Thesis - Exploration and Intuition - Nine improvisations, Recorded, Edited And Elaborated As Digital Audio
Antithesis - Reason, Structure and Process - Two Intellectual Interludes: Data and Process
Synthesis - Form and Content - None Of The Above
Variations on front insert:
- track 6 is titled "Hall of Mirrors" (also on disc)
- Antithesis is subtitled "Reason and Preconception"
- Synthesis is subtitled "Imagination and Form"
The tracklist printed on disc omits "Thesis", "Antithesis", and "Synthesis" but mentions
"Three Sonic Spaces", "Two Archetypes", and "Two Intellectual Interludes: Data And Process"
as collective titles.
The inserts appear to have been created using a high-end laser printer on a medium-weight paper stock