If this description applies to anyone, it applies to the sui generis German tribal art-noise ensemble Can, whose (arguably) defining moment was the Tago Mago album, released in 1971.
This is "space rock," with the "rock" part coming primarily from instrumentation and hair-length, as the music is about as far from Chuck Berry and power chords as it gets, whirling, ducking, spinning, sidestepping, cavorting, droning in and among bassist Holger Czukay, guitarist Michael Karoli, drummer Jaki Liebezeit, vocalist Damo Suzuki, and keyboardist Irmin Schmidt, who observed that at their best, Can was like a "Mighty, pulsing organism."
Today, Spoon/Mute Records announced a 40th anniversary edition of Tago Mago, coming out on November 15, packaged in the original UK artwork for the first time since 1971, and including a bonus CD with 50 minutes of unreleased live material from 1972, remastered in 2011.
I have the 2007 remastered CD, and it rocketh. Well, it more "pulses" than "rocks," but you know what I mean. Maybe the public will catch up this time around, as there is a lot more Can coming in 2012.