Vangelis - Aranjamente, producator
Mary Hopkin - Interpret
Raphael Preston - Inginer de sunet
Raine Shine - Inginer de sunet
Philippe Colonna - Inginer de sunet
Dick Morrisey - Saxofon
Fredrick Rousseau - Inginer de sunet, mastering
Stathis Zalidis - Fotografie
Mireille Landmann - Mastering

 In 1982 Vangelis recorded the music for Ridley Scott's cultclassic "Blade Runner", which was released in 1983. For still unknown reasons (I will not quote any of the many speculations since non of them was ever confirmed by a directly involved party) the original music was never released on a soundtrack album. A replayed "orchestral" version by the "New American Orchestra" was released but it couldn't match the original at all.
Paul M. Shammon's book "Future Noir, the Making of Blade Runner" (ISBN 0-06-105314-7) mentions an extremely rare bootleg tape (60 minutes) that surfaced just before the film was released theatrically, covering a selection of the film's music in very bad quality.
In 1989 the Themes compilation CD was released featuring the endtitles (ending slightly different) and the love theme.
In 1992 a CD-bootleg appeared with the music of the film in bad soundquality, but looking very official ("unauthorized replication prohibited"). It contained most of the score plus some bonuses like the sound of the original trailer.
Finally in 1994 it happened: an official soundtrack album was released, perhaps to back up the theatrical re-release of the film in slightly different form. In this new version of the film Harrison Ford's voice-over naration was gone, a 10 seconds unicorn dream sequences was inserted and the ending was cut short (the car sequence - originally lifted from "the Shining" was cut off). That's all but it has changed the film's perspectives tremendously.
The music on this official album is sadly far from complete. Some major passages were left out, like the chorus accompanying the revenge by Roy on his creator, as well as the beginning of the opening titles. But what it does offer is FANTASTIC sound quality, well chosen included dialogs and a few extra tracks that were not included in the film, yet written for it or inspired by it. It cannot totally replace the bootleg release, but it is all the more unmissable on its own accounts.
Some prominent guest performances: Rachel's song is sung by Mary Hopkin (in crystal clear 'aah' style years before Enya popularized this art form), Don Percival sings "One More Kiss Dear", Dick Morrisey plays the "Love Theme" saxophone and Demis Roussos hums and chants on "Tales of the Future".