What are the most complex, deep and mind-bending lyrics (non-rap) in existance?

there are a lot of versions of this question that relate to technical complexity, or are dominated by rap lyrics. I am asking about meaning, scope of subject matter and vision, and overall mind-blowingness, including contraversiality. I guess some hip hop counts but I mean in terms of the points the artist is making, not just in the form or rhythm. no one right answer. riddlesome, cryptic, mysterious, philisophical, deep deep deep deep deep etc.
Asked Jan 29, 2013
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Answered Jun 28, 2013

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