U2’s 1991 transformation from earnest seekers in pilgrim black to gaudy future-pop subversives is one of rock’s great acts of rebirth. The blanket coverage in remixes, B sides and embryonic demos is uniquely instructive – a lust for change recounted step by step, even the wrong ones.
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• U2 Go Back to the Nineties with Massive 'Achtung Baby' Reissue