A group whose distinctly ethereal and gossamer sound virtually defined the enigmatic image of the record label 4AD, Cocteau Twins were founded in Grangemouth, Scotland, in 1979. Taking their name from an obscure song from fellow Scots Simple Minds, the Cocteaus were originally formed by guitarist Robin Guthrie and bassist Will Heggie and later rounded out by Guthrie's girlfriend Elizabeth Fraser, an utterly unique performer whose swooping, operatic vocals relied less on any recognizable language than on the subjective sounds and textures of verbalized emotions.

Being released by the iconic legendary label 4AD, Chemical Chords is a collection of purposefully short, dense, fast pop songs, according to Gane, brimming with Motown-like drums, O'Hagan's finest baroque-pop brass and string arrangements and etched with some of Sadier's most eloquent, mellifluous vocal performances to date, it is, nonetheless, classic Stereolab; like all their best work, a perfect equipoise between an implausibly cool past and a shamelessly exotic future.

One of Stereolab's many spin-offs and side projects, Monade (pronounced mon-ard) originally featured Laetitia Sadier and Pram's Rosie Cuckston. The duo began collaborating in the mid-'90s, and Sadier recorded the first Monade tracks in 1996 at Pram's studio, with Cuckston playing and also helping to engineer the session. Some of these tracks were released by Duophonic as the Sunrise Telling and Witch Hazel/Ode to a Keyring singles. Sadier continued to record at Stereolab's own studio without Cuckston, and one of these tracks, "Cache Cache," ended up as a B-side on Stereolab's Calimero single. In between her Stereolab duties, Sadier completed enough material for Monade's debut album, Socialisme Ou Barbarie: The Bedroom Recordings, which was released by Duophonic in Europe and by Drag City in the U.S. in spring 2003.

With its full-length debut Peng!, Stereolab continued to develop a unique approach to experimental pop music, building on the seriously playful mix of Krautrock, dream pop, and lounge forged on the band's early singles. The album's first three tracks present the basic kinds of songs that the band would explore in the future: the tense, brooding "Super Falling Star" builds on simple keyboard drones and chilly, choral vocals; "Orgiastic" is a prototypically chugging, droning guitar and keyboard workout; and the sweet, bouncy melody and "ba ba ba" backing vocals of "Peng! 33" define Stereolab's early pop sound. "Perversion" mixes a heavy, dance-inspired beat with strummy, Velvet Underground guitars and Beach Boys harmonies, while "The Seeming and the Meaning" and "Stomach Worm" are two of the band's most dynamic, rock-oriented songs.

With this amazing album, Dead Can Dance fully took the plunge into the heady mix of musical traditions that would come to define its sound and style for the remainder of its career. The straightforward goth affectations are exchanged for a sonic palette and range of imagination. Calling it "haunting" and "atmospheric" barely scratches even the initial surface of the album's power. The common identification of the duo with a consciously medieval European sound starts here – quite understandable, when one considers the mystic titles of songs, references to Latin, choirs, and other touches that make the album sound like it was recorded in an immense cathedral.

An album and a singles collection at the same time, Fab Four Suture stitches together four limited-edition EPs Stereolab released in the fall of 2005 and spring of 2006. Over the years, the group has made a reputation for having EPs and singles – and therefore, singles collections – that are just as good, if not better, than their albums, as comps like Switched On and Aluminum Tunes attest. Stereolab has also always been very democratic about making sure fans can get their hands on nearly all of their more obscure releases in some form or another; while Fab Four Suture is a little different than their other collections in that it was designed to form an album upon the completion of the EP series, in terms of its quality, it's on par with the band's most enjoyable comps. By combining the looser, more experimental feel of their EPs with the album format, Fab Four Suture ends up being more organic-feeling than Stereolab's previous album, the lovely but occasionally distant Margerine Eclipse.

Realizing that trip-hop was a dead end, at least as far as hipness goes, Morcheeba expanded their sonic palette on their second album, Big Calm. Trip-hop and dance rhythms remain, but the trio has spent more time writing songs, crafting an album where pop, lounge, film soundtracks, reggae, jazz, and electronica all peacefully coexist. Consequently, Big Calm is a stylistic tour de force, evidence that Morcheeba have turned into a mature, sophisticated group with impeccable taste. Occasionally, the album can sound a little distant, as if the fusions and productions were more important than the actual songs, but the trio is so musically adept, and Skye Edwards' voice is so enchanting, that Big Calm become irresistible in its own way.

Few bands have come to single-handedly rule a genre as well as Stereolab. The only question remaining is which genre. The band's machine-funky grooves, oddball synthetic washes, and disturbingly flat vocals suggest a futuristic disco where the survivors of nuclear war have settled for alienation anthems that recall the "space-age bachelor pad" music of the distant innocent past. But this is all conjecture. No one knows what the music of the future will sound like. (Heck, we once thought by the year 2000 we'd all be walking around in Lost in Space outfits.) Stereolab, however, are certainly what we think of.