Cologne, Germany's Wolfgang Voigt is easily one of techno's most prolific, influential, and revered figures, but he's received the greatest acclaim for his ambient techno recordings under the moniker Gas. Voigt stated that Gas was inspired by childhood experiences in the forest near his hometown, and the music is lush and expansive, combining steady, hypnotic 4/4 beats with dense layers of ambient sounds. Much of his Gas material was created from slowed-down samples of pop, disco, and classical music, which were manipulated and altered beyond recognition. The tracks are typically lengthy and don't have proper beginnings or endings, functioning as sound environments or atmospheres rather than typical songs. Nevertheless, there is something highly accessible and even addictive about the recordings, and their following has continued to grow since their initial appearance during the '90s. Following 2000's well-regarded full-length Pop, Voigt seemed to retire the Gas project. However, he revived it for remixes and performances during the 2010s, and released the additional full-lengths Narkopop (2017), Rausch (2018), and Der Lange Marsch (2021), each offering subtle variations on the trademark Gas aesthetic.

During the early '90s, Voigt had been known for producing harder techno and acid under names such as Mike Ink and Vinyl Countdown. He also started the Profan label in 1993, as well as the Delirium record store; both were precursors to the highly influential Kompakt. In 1995, Voigt began releasing material as Gas, which expanded on the ideas of some of his more ambient and minimal-leaning projects such as M:I:5, Love Inc., and Studio 1. The first Gas release was the Modern EP on Profan. Following an appearance on Mille Plateaux's initial Electric Ladyland compilation, the project's self-titled debut appeared on the label in 1996. Unlike later Gas recordings, several of the tracks on Gas featured more up-front beats along with the slowed-down loops.

It wasn't until 1997's Zauberberg that the project really came into its own. The pumping beats, while still crucial to the tracks, were surrounded by thick layers of static and dramatic string samples. The album also introduced the forest-themed artwork that would become a major part of the Gas aesthetic. Two Gas releases, the third full-length Königsforst and the Oktember EP, appeared in 1999. These were followed by 2000's Pop, which placed less of an emphasis on beats (other than a few tracks) but generally had lighter, more melodic tones than previous Gas releases. The album was a huge critical success, even gaining accolades from indie rock-focused publications such as Pitchfork, and it ended up on several year-end (and eventually decade-end) album lists.

Following the success of Pop, Voigt largely put Gas on hold as he concentrated on running Kompakt. The label launched a series of Pop Ambient compilations that often seemed to use the Gas recordings as a blueprint, and numerous other ambient and techno musicians cited the project as an inspiration. In 2008, Kompakt released the four Gas full-lengths as a CD box set titled Nah und Fern, which received further acclaim and introduced the project to listeners who missed out on them before. The Raster-Noton label also released Gas, a book of photographs taken by Voigt during the '90s, along with a CD of previously unreleased material. In 2013, Voigt revived the moniker for a remix of "Cupid's Head" by the Field, a popular Kompakt-signed artist who had been heavily influenced by Gas. In 2016, Kompakt released Box, which compiled Zauberberg, Königsforst, Pop, and Oktember (with a 2001 compilation track produced as Tal replacing the EP's A-side, as it also appeared on Königsforst) on both vinyl and CD. (Modern and Gas were excluded, as Voigt didn't feel they were representative of the project.)

In 2017, Gas made its long-awaited return with the release of fifth full-length Narkopop. The album had a much more organic, almost orchestral sound than the project's prior, loop-based output. This was followed a year later by Rausch, a continuous hourlong work meant to be listened to in one sitting. Der Lange Marsch appeared in 2021, incorporating samples and elements from past Gas releases, and serving as a sort of retrospective of the project. ~ Paul Simpson, Rovi