Zeit (English: Time) is the third major release and third studio album by German electronic music group Tangerine Dream. A double LP, it was released in August 1972, being the first release featuring Peter Baumann, who joined then-current members Christopher Franke and Edgar Froese. Zeit is subtitled Largo in Four Movements. Content The style of this album is slower and more atmospheric than their previous albums. AllMusic wrote, "TD's purest expression of 'space music', this double album ebbs and flows effortlessly from one tone cluster to another. Almost classical in construction, the music is structured so as to evolve in sections as one theme literally melts into the next." Music critics often refer to Zeit as being one of the first (or perhaps the first) examples of dark ambient music. Florian Fricke from the Munich-based group Popol Vuh plays Moog synthesizer on the record, and four cellists appear on the first track. The album cover depicts a solar eclipse. As explained by Paul Russell for the 2002 reissue, "Zeit, which means 'time', was based on the philosophy that time was in fact motionless and only existed in our own minds." Release Zeit was released in August 1972 by record label Ohr. Before the 2002 reissue, there were two common releases on CD: a single CD release by Castle Music and a double CD set. The double CD set from Relativity in 1987 is longer by a few seconds, mainly because of longer inter-track gaps. Relativity also put out a single cassette, with the following song timings: 20:00, 18:00, 20:12, 17:43. The double CD set has a light blue border on the front and back covers. The 2011 release includes a second CD with the 25 November 1972 Klangwald concert at Cologne's WDR Sendesaal hall in West Germany, previously released as Tangerine Tree 52: Cologne 1972. Zomba Music Publishers Limited had released five CD series back in 1996. They all had the same front geometrical lines cover but with different colors; the Zeit album had it in blue. Despite the sleeve notes and the CD containing the following song timings 20:00, 18:00, 20:12, 17:43, the real timings of track 4 ("Zeit") measured in any CD player at only 16:58 but the music starts with some extra 45 seconds of previously unheard music on all the other releases. If one may carefully mix-add these seconds to the beginning of the "Zeit" track