There are two major ambient artists who record under the name Gas. The first is Wolfgang Voigt, who is the significantly more famous and prolific of the two. The other is Mat Jarvis, whose music I much prefer. Thusfar he's only released one album under his Gas moniker, and that was 15 years ago on the storied em:t label. em:t (pronounced "Emit") has never been terribly well-run and has gone out of business at least twice. Supposedly, Mat recorded a second Gas album, but it has never seen the light of day. In all my years on the intertubes using various p2p apps, I have never com across a copy of it (unlike the second Young American Primitive album, which I eventually got in FLAC.)
Given how rare and poorly distributed em:t releases are, it was quite a few years until I discovered Gas. I think I first heard "Oxygen" from the em:t compilation 1197 on SomaFM's Groove Salad in early 2001. Later that year, I got lucky on eBay and found a copy of that CD. In early 2002 I joined SoulSeek, which changed my perspective on electronic music forever. There I quickly found mp3 copies of dozens of albums I'd been after for ages. Included in that initial batch was Gas's 0095. It's somewhat on an uneven affair, but the good tracks sound stellar, even in 192K mp3s. A couple years ago, Mat released a remastered version in FLAC and announced it on Discogs. That is the sound of the Information Age working.
The video above is for Microscopic which would be my favorite Gas track were it not for Oxygen. I think Microscopic might actually be the better piece of music, but it's not the first one I discovered. Obviously, the audio quality of a YouTube video is crap, but it's handy for embedding purposes. You can get a free download of the song in lossy format off last.fm (and if you ask nicely, Knuckles might furnish you with a FLAC.)
Around the 3:30 mark, Mat does a solo with a stunning portamento synth string patch. The main lead in this song is a powerful argument for analogue synthesizers. The lead sound returns again around 7 minutes in to do it again.
10 minutes might seem like a long time to listen to one song, especially embedded on a message board thread via a YouTube video. This is one track that is worth the time commitment. Use your most musical source and most forgiving "euphonic" cans if you must.