The evolution of the Flaming Lips gig

Rock Show Phase (1983 - 1996)

The rock show period comprised of four(1) fairly distinct stages, with the unifying characteristics of copious quantities of noise and an interesting profligacy of unusual(2) lighting techniques:

Pyrus Labius Inaugrous flourished in far-flung places such as ethnically dominated ‘Blues Bars’ and transsexual ‘Dives’. An early tendency towards abnormality attracted an equally diverse set of admirers. Few visual records exist from this early stage.

Pyrus Labius Vulgaris was readily distinguishable by an unbridled tendency to sprout a ‘Led Zeppelin cover’ at any moment. This variety saw the rapid development of the use of on-stage pyrotechnics, despite remaining in habitats of modest size, and also some early multimedia experiences(3).

The highly seasonal variety Pyrus Labius Ferocious displayed a remarkable extension in sound vocabulary and extreme development of musical style. This lurid spectacle manifested itself as a rushing wall of noise and musical ideas hitherto unparalleled. Similarly extended was the propensity to indulge in pyrotechnic experimentation(4).

The subsequent Pyrus Labius Populous variation showed signs of refinement and a distinctive propagation across a much larger section of the planet - it was spotted throughout Europe and also in parts of Japan and the Australias. Unusual lighting was employed to the full, with fairy lights a particular favourite(5), often coupled with the intensive distribution of either bubbles or confetti. Also of note is a marked proliferation at the sites of open-air festivals. A secondary variation of Populous is known to have existed - Pyrus Labius Intimatus was found in many record stores, as well as some radio stations. This was an altogether more low key variety, though no less glorious.

Multiple Sound Source Experimentation Phase (1996 - 1998)

Pyrus Labius receded vastly when Populous overextended and drew the Rock Show Phase to a close. This precipitated the relatively rare Enclosous variety, found only in parking lots in the mid-south of the North American sub-continent. Pyrus Labius Enclosus was distinguished by a stark appearance coupled with a truly complex construction. Its rarity cannot be overstated, as there are only seven recorded sightings of this phenomenon(6).

The main reason for the scarcity of Enclosus was the rapid development into the highly developed Pyrus Labius Involvus. This intriguingly evolved form of gig was first encountered in the late Summer of 1997, and rapidly developed from a relatively stationary system to the well documented form seen at the fully interactive third encounter. Involvus displays an astonishing variety of behavioural patterns and has been known to induce extreme reactions(7). Several sightings usually occur in quick succession and close proximity before this most enigmatic variety of Pyrus Labius goes to ground for varying periods of time. It is now thought to be dormant.

In 1998, climatic change in the environment of Pyrus Labius and marked shifts in growth patterns suggested that the development of a new genus was imminent. Reports of possible mutations abounded. However, it remained unclear how these might actually manifest themselves(8).

Multimedia Extravaganza Phase (1999 - )

What actually established itself could be genetically considered to be a hybrid variety, born of Populous and Enclosus. However, the new Pyrus Labius Spectaclus is in fact very much a mutated hybrid, achieving far more than has ever been seen before. Still in its early stages, this truly remarkable mutation has already displayed a huge range of new visual traits with strange additional dimensions in sound(9). Coupled with a tendency to evoke much more feeling than had previously been the case (in the Rock Show Phase from which it is largely descended), this looks set to become the most beautiful and admired variety yet.

Pyrus Labius Populous - more detail on the most widely encountered variety
Pyrus Labius Intimatus - an exposition
Multiple 
Sound Source Experiments
(1)Hird (1997) has argued that there were in actual fact five stages proper, but that sort of pedantry could lead to the opening of a fairly large can of subterranean invertebrates.
(2)In terms of involving various forms of incendiary activities.
(3)A prime example was the background screening of various key scenes from the film ‘The Exorcist’, as the band performed in the midst of the highly efficient output of a smoke machine. Dressed in costumes depicting Regan the little demon girl, Damien the priest bloke, and Satan. Other visual sub-expositions were less tasteful.
(4)As in flaming cymbals, synchronous sequential combustion of a ceiling full of hydrogen filled balloons and (doubtless) many other equally illegal ‘japes’.
(5)As many as possible whenever possible. Especially if they could be wrapped around the body or interspersed with spinning bullseyes and other such tat.
(6)Easily identified by the presence of the ‘yellow clad one, with bullhorn’.
(7)Including joy, nausea, orgasm, despair and extreme disorientation.
(8)That there would be more to it than three people on a stage was clear, but the wild claims ranged from old members returning to the fold, past mini-orchestras/other famous guitarists/virtual reality band members joining the tours, to the band telepathically transmitting songs (from inside plastic bubbles) directly to stick-on neuro-receivers.
(9)We're talking about video-visual chaos, lasers, FM transmission to personal radios, massive sounding drum loops, and a bucket of pure emotive showmanship. Behold and bear witness.