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But many artists are hallucinating when they envisioned some of their pieces. Who's to say Mozart wasn't on a trip when he created The Marriage of Figaro.
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That would have to be a very very long hallucination because it’s a huge opera that took a long time to write.
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We don't know Mozart's state of mind when he composed.

He didn't hallucinate the Marriage of Figaro but he may well have been hallucinating.

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