With 1991's Blue Lines, the collective known as Massive Attack virtually invented the kind of who-does-what? knob-twirling aggregation of sound makers, singers and programmers that makes finding producer's credits so difficult and makes "electronica," whatever that is, look so deceptively easy. In an era when other pop-electronic bands seem to settle for matching breathy female vocals with a click track, Massive Attack always deliver an exhilarating rampage of complex, menacing grooves. The group's sense of proportion is finer than those of its peers — rather than create soundscapes for soundscapes' sake, it demands that its atmospheres evoke real moods, real emotions, real engagement. The predominant flavor of 100th Window is Asian, making for a lyrical, relaxed mood, but the vocals address the listener with creepy directness, telling "you" again and again what you're up to. Gonglike bells herald the swirly, layered pop of "Special Cases"; actual funk threatens but never achieves release on "Butterfly Caught." "Future Proof" sounds like a tabla from outer space, as sinuous Middle Eastern noises shimmy against the thump of a drum program. On "Everywhen," a voice of indeterminate sex sings things such as "You think you know." The closer, "Antistar," draws South Asian threads together for a flowing, nervously beautiful, danceable collage.

100th Window includes a couple of drifty dullards — unforgivable for artists who usually set the bar so high — notably "Small Time Shot Away," which doodles and deedles like the wait-area music for an amusement park's space-coaster. Massive Attack fans won't be startled by anything on 100th Window, but at nine tracks, this may be the most accessible, freaky, futuristic electronic head-food album on the market.

“Youth Knows No Pain”

“Like on 'Youth Knows No Pain' — we are the ones that should demonstrate, because we can take it,” Likke Li said. “We can pierce ourselves, take Ecstasy, dance all night and still go to work at our McDonald's jobs.” Despite the hedonistic sentiment in the song, the Swedish singer also admitted in hindsight her youth had repercussions. “I remember when I was 18-19 and feeling that I know it all,” Li said. “I always feel that I know it all. But that song is about realizing you don’t, and reflecting, ‘Boy, if I only knew what would follow.’”