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Expo '85	11:21
A1	Circus Piece - A Cadential Process	4:04
A2	Transitions - A Hierarchical Process Composed By – Charles Ames	2:12
A3	Toy Harmonium - A Statistical Process Composed By – John Myhill	1:41
A4	Mix Or Match - A Tune Generating Process (5 Examples) Composed By – Charles Ames	3:44
Quartet No. 4 "Illiac Suite"	18:07
A5	Experiment One (Presto, Andante, Allegro)	4:38
A6	Experiment Two (Adagio, Ma Non Troppo Lento)	4:01
A7	Experiment Three (Allegro Con Brio)	5:59
A8	Experiment Four (Tanto Presto Che Possibile)	3:29
Computer Music	6:32
B1	Decisively	3:33
B2	Briskly	0:58
B3	Lyrically	2:01
Persiflage	10:40
B4	Allegro Flute – Robert DickOboe – Nora Post	10:40
An Avalanche	9:04
B5	Getting Ready For It	1:00
B6	The Avalanche	6:00
B7	Cleaning Up The Mess	2:04

Credits

• Cello – Lee Duckles (tracks: A5 to A8)
• Composed By – G. Allan O'Connor (tracks: B1 to B3), Lejaren Hiller (tracks: A1, A4 to B7), Leonard Isaacson (tracks: A5 to A8)
• Engineer [Recording] – George Ritscher (tracks: A5 to A8, B5 to B7), Stephen Bradley (tracks: A1 to A4, B1 to B4)
• Percussion – Jan Williams (tracks: B1 to B4), Robert Rosen (tracks: B5 to B7)
• Performer – Composition String Quartet (tracks: A5 to A8)
• Synthesizer, Computer, Electronics – Lejaren Hiller
• Technician [Audio] – George Ritscher (tracks: B5 to B7)
• Viola – Theodore Lucas (tracks: A5 to A8)
• Violin – David Rosenboom (tracks: A5 to A8), William Mullen (tracks: A5 to A8)
• Vocals [Pitchman] – Royal MacDonald (tracks: B5 to B7)
• Vocals [Prima Donna] – Norma Marder (tracks: B5 to B7)

Notes

Comes in a gatefold sleeve.
Expo '85 for multiple synthesizers recorded and composed 1985.
Quartet No. 4 for strings composed 1957, recorded 1967.
Computer Music for percussion and tape composed 1968, recorded 1980.
Persiflage for flute, oboe and percussion composed 1977, recorded 1980.
An Avalanche for pitchman, prima donna, player piano, percussionist and pre-recorded playback composed and recorded 1968.

Other versions

Category	Artist	Title (Format)	Label	Category	Country	Year
WER 60128-50	Lejaren Hiller	Computer Music Retrospective ‎(CD, Comp, RE)	WERGO	WER 60128-50	Germany	1989