You may not yet realize it, but The Crystal Method have already infiltrated your lives. Their  tunes feature on Gap and R.A.F. adverts, Playstation games, film soundtracks, almost anything requiring a soundtrack. It's all part of a plan to take over your mind. Say what you will about 'electronica', all you musical Luddites, but make no mistake -- electronic music has been the only truly fresh item on the menu in the 1990's. And with today's new generation of electronic acts providing a classic balls-out rocks removal experience without a Marshall stack in sight, people who think that only guitars can produce 'music' better get with the program quickly.L.A.'s Crystal Method have been referred to as America's answer to electronic movement. A dance-based duo with a definite rock band feel, the comparison would seem appropriate, although it tends to erase what makes the group distinct: a solid base in American hip-hop, rock, soul, and pop. Formed in 1993 by Ken Jordan and Scott Kirkland, Crystal Method is the most recent stop in a string of projects that led them from their native Las Vegas (and some forgettable 4-track stabs at vocal house music), to the early-'90s L.A. rave scene. Drawn in by its youthful idealism, Jordan and Kirkland became absorbed by L.A.'s underground club culture.The bombastic grooves of Vegas, the group's first full-length release has been likened to the Chemical Brothers' brand of breakbeat mayhem. Yet the Crystal Method madness is cut from a more acidic quilt, where synthesizers squelch and sirens buzz and the vibe is all about crowd-pleasing intensity. Highlighted by the tracks "Trip Like I Do," a different version from that of the collaboration with Filter for the Spawn soundtrack, and "Keep Hope Alive," a Chemical Brothers essential big beat favorite, the album manages to capture the same raw power of rock 'n' roll with electronic components. While Tweekend does apply similar grooves and siren sounds, repeated plays prove that the duo of Scott Kirkland and Ken Jordan have learned how to melt the mind in addition to rocking the house. With guest spots by Rage Against the Machine's Tom Morello and Stone Temple Pilots' Scott Weiland, Tweekend is both subversive and dance-friendly. In "Murder," Weiland sings over a woozy blend of crunching riffs, wah-wah guitars, Moog moos, and mysterious strings for a kind of twisted BT-like pop poetry. "PHD," "Wild, Sweet and Cool," and the organ-grinding "Roll It Up" are classic beats-and-bliss Crystal Method. But "Name of the Game" is straight-up rock and rage, while "Ten Miles Back" and "Blowout" are surreal drives into a nocturnal desert. Tweekend is so dense and delirious, it's hard to find your way out. But you may not want to return from this lost (T)weekend.