Trance as we are aware goes back thousands years.
From first repetitive chants to first repetitive drumming.
Electronic Trance which has it's birth in Berlin School, has its roots in
*1956 Tom Dissevelt & Kid Baltan
aka Dick Raaijmakers' : Song of The Second Moon
1958 Tom Dissevelt Orbit Aurora : was a hit in Germany.
Here we realise where Kraftwerk, Tangerine Dream very well heard of Tom and Dick.
*1960 ish Daphne Oram's Oramics Bird of Parallax
9min51 to 12min01 is Trance
(3min27 to 5min11 a type of Techno without beats).
*1969 Terry Riley : A Rainbow in Curved Air
1973 Kraftwerk Ralf und Florian album;
1974 Tangerine Dream Phaedra Sequences style, Soloing style that birthed Berlin School that birthed Trance.
*1971 Tonto's Expanding Head Band : Zero Time
Opening track Cybernaut has Trance Berlin School : synth sequence with soloing.
*1974 Tangerine Dream : Phaedra.
Trance of Berlin school the signature Tangerine Dream style :
synth solos over subtly shifting electronic sequences.
1974 Edgar Froese album Aqua tracks Panorphelia, NGC 891 are Berlin school.
Phaedra Berlin school influential upon Trance of :
1975 Klaus Schulze Picture Music, 1975 Timewind (Bayreuth Return), 1976 Moondawn;
1976 Ash Ra NewAge of Earth first track Sunrain;
1978 Michael Hoenig Departure from the Northern Wasteland title track;
1982 Steve Roach Now, 1983 Traveller.
*1975 Suzanne Ciani Buchla Concerts
*1981 Manuel Gottsching : E2-E4
A decade before Balearic Ibiza Trance of mid 1990s.
Influenced Steve Reich's 1987 Electric Counterpoint part I.
(E2-E4 was played in 1981/82 the Paradise Garage in New York, the prototype dance club by DJ Larry Levan).
*1981 Klaus Schulze : Trancefer
Klaus would name it Trance.
1988 Klaus Schulze : En=Trance
*1988 Jean Michel Jarre : Revolution
Would influence the first recognised Trance track of the genre by the KLF : 1989 What Time Is Love Pure Trance 1.
Prior to Jarre's Revolution, KLF were making HipHop, Pop and House
(as The Jam's : Justified Ancients of Mu Mu
1987 album What the f is Going On
and House, Pop on 1988 Who Killed the Jam's.
1988 Burn The Bastards their first single as KLF is House).
*1989 KLF began labeling their remixes Trance
What Time Is Love Pure Trance 1
Using as its main theme a sample from 1973 Jesus Christ Superstar Overture guitar riff
composed by Andrew Lloyd Webber and Tim Rice then synthesises this riff.
KLF would usher in Trance genre.