The four tracks consist of 3-4 distinct sections each. The last two of the four sections of "Tangent" are titled "Polish Dance" (which is notably similar to the composition "Choronzon" from Exit

Exit (Tangerine Dream album)

Exit is an electronic music album released in 1981 by the German group Tangerine Dream. The first track features an uncredited female voice chanting, in Russian, the names of the continents of the world and pleading to end the threat of "limited" nuclear war, which was a potential danger facing the...

) and "Rare Bird" respectively, and the second section of "Barbakane" is titled "Warsaw in the Sun". There are also further, less known official and unofficial names for some other sections of the album, too. It was also available as a limited edition picture disc

Picture disc

Picture discs are gramophone records that show images on their playing surface, rather than being of plain black or coloured vinyl.-Development:...

 which feature the cover photos directly on the LPs' vinyl.

Out of twelve CD releases, only three have the complete album, all others are either missing "Tangent" or have a truncated version of "Barbakane."

• (1984) Jive/Teldec 8.28638
• (1984) Relativity 88561-8045-2, re-released in 1993
• (2011) Reactive EREACD 2018

The second is a double-CD release, copyrighted 1984 by Zomba Ent. Inc., Made in the U.S., and apparently difficult to find. On disk one, "Rare Bird", originally an encore, is split off from "Tangent" as a track on its own. The CD artwork, however, lists "Tangent" as a single full-length track.

Equipment

Chris Franke

• Sequential Circuits Prophet 5
• Sequential Circuits Prophet 600
• Sequential Circuits Pro-1
• E-MU Emulator
• E-MU Custom Programmable Synth
• Moog Custom Programmable Modular Synth
• MTI Synergy
• PE Polyrhythmic Sequencer
• Compulab Digital Sequencer
• Syntec Custom Digital Drum Computer
• Simmons Drum Modules
• Quantec Room Simulator
• Roland SDE 3000
• Hill Multi-Mixer

Edgar Froese

• YAMAHA DX-7
• YAMAHA YP-30
• Roland Jupiter-8
• Roland Jupiter-6
• Sequential Circuits Prophet 5
• PPG Wave 2.2
• PE Polyrhythmic Sequencer
• Publison DHM 89 B2
• Publison KB 2000
• KORG SDD 3000 Delay
• Roland SDE MIDI/DCB Interfaces
• Quantec Room Simulator
• Canproduct Mixer

Johannes Schmoelling

• Roland Jupiter-8
• PPG Wave 2.3 Waveterm
• EEH CM 4 Digital Sequencer
• Bohm Digital Drums
• Roland TR-808
• Mini Moog
• KORG Mono/Poly
• Roland SDE 3000 Delay
• Canproduct Mixer
• MXR 01 Digital Reverb
• MXR Digital Delay
• BOSS Overdrive/Flanger

Singles

• "Warsaw In The Sun" UK No.96 (though as this was outside the Top 75 it was not officially a hit)