Bootleg recordings arise from a multitude of sources, including covertly copied live concerts, studio outtakes, broadcast performances.
The show at the Royal Albert Hall in London on 2 April 1975 was released as the bootleg Coefficient Of Aural Expansion (1994).
Tangerine Dream played in Brussels twice in 1976— at Auditorium Paul-Emile Janson at Université Libre de Bruxelles on 9 February 1976 and at Ancienne Belgique on 16 November 1976.
Disc one of the bootleg CD set3 Tier Dream (1993), titled "Analogue Days", includes sixty minutes of music.
[10] Later versions were released as Die Medianen von Zymbiola and The Dremas Are Known to You [sic] and attributed to concerts in Kansas and Seattle.
Tangerine Dream toured North American in 1977 to promote Encore, playing at the Paramount Theatre in Seattle on 21 April 1977.
The bootleg LP Space & Spheres contains about 40 minutes of the concert at the Newcastle City Hall performed on 25 October 1981.
The main part of the concert was released on the bootleg CD Rätikon (1994), along with tracks by Popol Vuh, Man and Brian Eno.
The band was preparing for a tour of Japan in June 1983, when director, writer and actor Rainer Werner Fassbinder died.
A concert was performed at the Alte Oper in Frankfurt with about 35 minutes of material that had appeared on the albums Logos Live (1982), Poland (1984) and Kamikaze 1989 (1982).
Tangerine Dream played at the Hammersmith Odeon in London on 27 March 1986 as part of a European tour to promote Underwater Sunlight.
During the 1986 North American tour, Tangerine Dream played at the Irvine Meadows Amphitheater in Laguna Hills, California on 6 June 1986.
During the Optical Race tour, Tangerine Dream played at Radio City Music Hall, New York on 7 September 1988.
Another bootleg CD of this concert was released as In den Gärten Pharaos/Bicycle Race (1992); the title is a reference to a Popol Vuh album.
[40] Canyon Dreams (1991) was officially released on CD shortly after the bootleg and used slightly different versions of music.
[43] The track was released on Tangerine Tree 36: Assorted Secrets 1 Great Wall of China (1999) includes "Meng Tian", "Summer In Shauxi" and "No More Candles Burning".
[39][42] Tangerine Dream scored the film The Keep in 1983, but the first issue of the soundtrack The Keep (1997) was a limited run of 150 CDs sold at a concert in the UK.
[54] Das Mädchen auf der Treppe (1982) is an LP soundtrack album from the TV series Tatort.
The two LP set was packaged with a printed booklet and includes interviews and music clips that differ from the soundtrack album.
Tangerine Dream composed the score to The Soldier (1982); the soundtrack was released as part of the box set Pilots of Purple Twilight (The Virgin Recordings 1980-1983) (2020).
[39] The Virgin LP sampler V (1975) includes the "Overture" to the play Oedipus Tyrannus (1974) scored by Tangerine Dream; this track has never been released on other media.
The bootlegs 70/90 (1990), Electronic Orgy (1997) and Sol Et Luna (1994) include the solo tracks "Haunted Heights", "Chimes and Chains" and "Baryll Blue".
The single track "Dolphin Smile" has never been officially released on CD or other media, but has appeared on the bootlegs Parisian Dreams Too (1990), 70/90 (1990), Electronic Orgy (1997) and Traumzeit (1998).
The track was released on the Keen Auricle fan CD Rare Trax 1 (1991) and on the bootlegs Electronic Orgy (1997) and Traumzeit (1998).
It is included on the Keen Auricle fan release Rare Trax 1 (1991) and the bootlegs Sol Et Luna (1994) and Electronic Orgy (1997).
The compilation album The Private Music Of Tangerine Dream (1992) contains two unique tracks— "Beaver Town" and "Roaring Of The Bliss".
[1][39][44][53] The album Quinoa (1992) was originally a limited release of 1,000 copies for the now defunct official Tangerine Dream International Fan Club with the single title track.
Shepherds Bush (1996) is a limited release CD sold at the London 1996 concert and includes two tracks— "Eleanor Rigby" and "Thief Yang and the Tangram Seal".
A CD remaster of the bootleg LP Leprous Appearance On Wednesday (1984) was released as Dreaming (1994) and included "Ultima Thule, Part One".
[9][39][53][61] Electronic Inspiration: Live 1985 (1986) is a bootleg LP from the 1986 European tour that has not been definitively identified due to poor audio quality.