American trance-techno DJ Christopher Lawrence (he of "Shredder" fame) is the ideal steward of the Exposure IV compilation--his momentum behind the decks is legendary, and the 13 rave-ready cuts assembled here scream past so quickly they leave contrails. As with his own recordings, Lawrence understands that the sameness inherent in trance music isn"t necessarily a debit; the trick is to highlight the quirks within the grooves without upsetting the flow. And man, can Lawrence mix. That these tracks are obscure even by techno standards heightens the transcendental quotient. The midsection of Illuminati"s "Bohemian Groove" is quite possibly the sound of a lunar landing, and the exploding beats carbonating Marc Dawn"s "Expander" are wildly intense. Chug that Red Bull and get going. --Kim Hughes