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Bruckner's Second Symphony is a rare enough encounter in it's 1877 version, but it's virtually unperformed in the 1872 original version. This is not owing to some deficiency of the earlier ideas compared to the later alterations. It's mainly habit and convenience because to get new parts and re-learn something ostensibly known, that differs in a great many details, means an extra expense of effort and resources. That's a shame, really, because it is decidedly worth discovering the original, not-yet-ironed-out rawness of Bruckner's early masterpiece, which was something unheard of at the time - but needn't remain unheard now.